Friday, December 26, 2008

Potential problems | Search Engine Optimization

Requesting reconsideration

Watch a video on why your site may not be appearing in search results and how to get it reconsidered.

If your site isn't appearing in Google search results, or it's performing more poorly than it once did (and you believe that it does not violate our webmaster guidelines), you can ask Google to reconsider your site.

In addition, if you recently purchased a domain that you think may have violated our guidelines before you owned it, you can use the reconsideration request form to let us know that you recently acquired the site and that it now adheres to the guidelines.

To request reconsideration of your site:

1. First, make sure you've added your site to your Webmaster Tools account, and verified site ownership.
2. Sign in to Google Webmaster Tools.
3. On the Dashboard, under Talk to Google in the list on the right, click Request reconsideration and follow the steps.




Hidden text and links

Hiding text or links in your content can cause your site to be perceived as untrustworthy since it presents information to search engines differently than to visitors. Text (such as excessive keywords) can be hidden in several ways, including:

* Using white text on a white background
* Including text behind an image
* Using CSS to hide text
* Setting the font size to 0

Hidden links are links that are intended to be crawled by Googlebot, but are unreadable to humans because:

* The link consists of hidden text (for example, the text color and background color are identical).
* CSS has been used to make tiny hyperlinks, as little as one pixel high.
* The link is hidden in a small character - for example, a hyphen in the middle of a paragraph.

If your site is perceived to contain hidden text and links that are deceptive in intent, your site may be removed from the Google index, and will not appear in search results pages. When evaluating your site to see if it includes hidden text or links, look for anything that's not easily viewable by visitors of your site. Are any text or links there solely for search engines rather than visitors?

If you're using text to try to describe something search engines can't access - for example, Javascript, images, or Flash files - remember that many human visitors using screen readers, mobile browsers, browsers without plug-ins, and slow connections will not be able to view that content either. Using descriptive text for these items will improve the accessibility of your site. You can test accessibility by turning off Javascript, Flash, and images in your browser, or by using a text-only browser such as Lynx. Some tips on making your site accessible include:

* Images: Use the alt attribute to provide descriptive text. In addition, we recommend using a human-readable caption and descriptive text around the image.
* Javascript: Place the same content from the Javascript in a no script tag. If you use this method, ensure the contents are exactly same as what is contained in the Javascript and that this content is shown to visitors who do not have Javascript enabled in their browser.
* Videos: Include descriptive text about the video in HTML. You might also consider providing transcripts.

If you do find hidden text or links on your site, either remove them or, if they are relevant for your site's visitors, make them easily viewable. If your site has been removed from our search results, review our webmaster guidelines for more information. Once you've made your changes and are confident that your site no longer violates our guidelines, submit your site for reconsideration.



Site removed from the Google index

Google may temporarily or permanently remove sites from its index and search results if it believes it is obligated to do so by law, if the sites do not meet Google's quality guidelines, or for other reasons, such as if the sites detract from users' ability to locate relevant information. We cannot comment on the individual reasons a page may be removed. However, certain actions such as cloaking, writing text in such a way that it can be seen by search engines but not by users, or setting up pages/links with the sole purpose of fooling search engines may result in removal from our index. Please read our Webmaster Guidelines for more information.

If your site is blocked from our index because it violates our quality guidelines, we may alert you about this using our Webmaster Tools. Simply sign in to our Webmaster Tools, add your site URL, and verify site ownership. The Overview page provides information about the indexing of your site.

If you receive a notification that your site violates our quality guidelines, you can modify your site so that it meets these guidelines, then submit your site for reconsideration.








Cloaking, sneaky Javascript redirects, and doorway pages
Cloaking

Cloaking refers to the practice of presenting different content or URLs to users and search engines. Serving up different results based on user agent may cause your site to be perceived as deceptive and removed from the Google index.

Some examples of cloaking include:

* Serving a page of HTML text to search engines, while showing a page of images or Flash to users.
* Serving different content to search engines than to users.

If your site contains elements that aren't crawlable by search engines (such as rich media files other than Flash, JavaScript, or images), you shouldn't provide cloaked content to search engines. Rather, you should consider visitors to your site who are unable to view these elements as well. For instance:

* Provide alt text that describes images for visitors with screen readers or images turned off in their browsers.
* Provide the textual contents of JavaScript in a noscript tag.

Ensure that you provide the same content in both elements (for instance, provide the same text in the JavaScript as in the noscript tag). Including substantially different content in the alternate element may cause Google to take action on the site.
Sneaky JavaScript redirects

When Googlebot indexes a page containing JavaScript, it will index that page but it cannot follow or index any links hidden in the JavaScript itself. Use of JavaScript is an entirely legitimate web practice. However, use of JavaScript with the intent to deceive search engines is not. For instance, placing different text in JavaScript than in a noscript tag violates our webmaster guidelines because it displays different content for users (who see the JavaScript-based text) than for search engines (which see the noscript-based text). Along those lines, it violates the webmaster guidelines to embed a link in JavaScript that redirects the user to a different page with the intent to show the user a different page than the search engine sees. When a redirect link is embedded in JavaScript, the search engine indexes the original page rather than following the link, whereas users are taken to the redirect target. Like cloaking, this practice is deceptive because it displays different content to users and to Googlebot, and can take a visitor somewhere other than where they intended to go.

Note that placement of links within JavaScript is alone not deceptive. When examining JavaScript on your site to ensure your site adheres to our guidelines, consider the intent.

Keep in mind that since search engines generally can't access the contents of JavaScript, legitimate links within JavaScript will likely be inaccessible to them (as well as to visitors without Javascript-enabled browsers). You might instead keep links outside of JavaScript or replicate them in a noscript tag.
Doorway pages

Doorway pages are typically large sets of poor-quality pages where each page is optimized for a specific keyword or phrase. In many cases, doorway pages are written to rank for a particular phrase and then funnel users to a single destination.

Whether deployed across many domains or established within one domain, doorway pages tend to frustrate users, and are in violation of our webmaster guidelines.

Google's aim is to give our users the most valuable and relevant search results. Therefore, we frown on practices that are designed to manipulate search engines and deceive users by directing them to sites other than the ones they selected, and that provide content solely for the benefit of search engines. Google may take action on doorway sites and other sites making use of these deceptive practice, including removing these sites from the Google index.

If your site has been removed from our search results, review our webmaster guidelines for more information. Once you've made your changes and are confident that your site no longer violates our guidelines, submit your site for reconsideration.










Duplicate content

Duplicate content generally refers to substantive blocks of content within or across domains that either completely match other content or are appreciably similar. Mostly, this is not deceptive in origin. Examples of non-malicious duplicate content could include:

* Discussion forums that can generate both regular and stripped-down pages targeted at mobile devices
* Store items shown or linked via multiple distinct URLs
* Printer-only versions of web pages

However, in some cases, content is deliberately duplicated across domains in an attempt to manipulate search engine rankings or win more traffic. Deceptive practices like this can result in a poor user experience, when a visitor sees substantially the same content repeated within a set of search results.

Google tries hard to index and show pages with distinct information. This filtering means, for instance, that if your site has a "regular" and "printer" version of each article, and neither of these is blocked in robots.txt or with a noindex meta tag, we'll choose one of them to list. In the rare cases in which Google perceives that duplicate content may be shown with intent to manipulate our rankings and deceive our users, we'll also make appropriate adjustments in the indexing and ranking of the sites involved. As a result, the ranking of the site may suffer, or the site might be removed entirely from the Google index, in which case it will no longer appear in search results.

There are some steps you can take to proactively address duplicate content issues, and ensure that visitors see the content you want them to.

* Consider blocking pages from indexing: Rather than letting Google's algorithms determine the "best" version of a document, you may wish to help guide us to your preferred version. For instance, if you don't want us to index the printer versions of your site's articles, disallow those directories or make use of regular expressions in your robots.txt file.
* Use 301s: If you've restructured your site, use 301 redirects ("RedirectPermanent") in your .htaccess file to smartly redirect users, Googlebot, and other spiders. (In Apache, you can do this with an .htaccess file; in IIS, you can do this through the administrative console.)
* Be consistent: Try to keep your internal linking consistent. For example, don't link to http://www.example.com/page/ and http://www.example.com/page and http://www.example.com/page/index.htm.
* Use top-level domains: To help us serve the most appropriate version of a document, use top-level domains whenever possible to handle country-specific content. We're more likely to know that www.example.de contains Germany-focused content, for instance, than www.example.com/de or de.example.com.
* Syndicate carefully: If you syndicate your content on other sites, Google will always show the version we think is most appropriate for users in each given search, which may or may not be the version you'd prefer. However, it is helpful to ensure that each site on which your content is syndicated includes a link back to your original article. You can also ask those who use your syndicated material to block the version on their sites with robots.txt.
* Use Webmaster Tools to tell us how you prefer your site to be indexed: You can tell Google your preferred domain (for example, www.example.com or http://example.com).
* Minimize boilerplate repetition: For instance, instead of including lengthy copyright text on the bottom of every page, include a very brief summary and then link to a page with more details.
* Avoid publishing stubs: Users don't like seeing "empty" pages, so avoid placeholders where possible. For example, don't publish pages for which you don't yet have real content. If you do create placeholder pages, use robots.txt to block these from being crawled.
* Understand your content management system: Make sure you're familiar with how content is displayed on your web site. Blogs, forums, and related systems often show the same content in multiple formats. For example, a blog entry may appear on the home page of a blog, in an archive page, and in a page of other entries with the same label.
* Minimize similar content: If you have many pages that are similar, consider expanding each page or consolidating the pages into one. For instance, if you have a travel site with separate pages for two cities, but the same information on both pages, you could either merge the pages into one page about both cities or you could expand each page to contain unique content about each city.

Duplicate content on a site is not grounds for action on that site unless it appears that the intent of the duplicate content is to be deceptive and manipulate search engine results. If your site suffers from duplicate content issues, and you don't follow the advice listed above, we do a good job of choosing a version of the content to show in our search results.

However, if our review indicated that you engaged in deceptive practices and your site has been removed from our search results, review your site carefully. If your site has been removed from our search results, review our webmaster guidelines for more information. Once you've made your changes and are confident that your site no longer violates our guidelines, submit your site for reconsideration.

If you find that another site is duplicating your content by scraping (misappropriating and republishing) it, it's unlikely that this will negatively impact your site's ranking in Google search results pages. If you do spot a case that's particularly frustrating, you are welcome to file a DMCA request to claim ownership of the content and request removal of the other site from Google's index.







Keyword stuffing

"Keyword stuffing" refers to the practice of loading a webpage with keywords in an attempt to manipulate a site's ranking in Google's search results. Filling pages with keywords results in a negative user experience, and can harm your site's ranking. Focus on creating useful, information-rich content that uses keywords appropriately and in context.

To fix this problem, review your site for misused keywords. Typically, these will be lists or paragraphs of keywords, often randomly repeated. Check carefully, because keywords can often be in the form of hidden text, or they can be hidden in title tags or alt attributes.

Once you've made your changes and are confident that your site no longer violates our webmaster guidelines, submit your site for reconsideration.







Little or no original content

One of the most important steps in improving your site's ranking in Google search results is to ensure that it contains plenty of rich information that includes relevant keywords, used appropriately, that indicate the subject matter of your content.

However, some webmasters attempt to improve their page's ranking and attract visitors by creating pages with many words but little or no authentic content. Google will take action against domains that try to rank more highly by just showing scraped or other auto-generated pages that don't add any value to users. Examples include:

* Thin affiliate sites: These sites collect pay-per-click (PPC) revenue by sending visitors to the sites of affiliate programs, while providing little or no value-added content or service to the user. These sites usually have no original content and may be cookie-cutter sites or templates with no unique content.
* Doorway pages: Pages created just for search engines
* Auto-generated content: Content generated programatically. Often this will consist of random paragraphs of text that make no sense to the reader but that may contain search keywords.
* Scraped content: Some webmasters make use of content taken from other, more reputable sites on the assumption that increasing the volume of web pages with random, irrelevant content is a good long-term strategy. Purely scraped content, even from high-quality sources, may not provide any added value to your users without additional useful services or content provided by your site. It's worthwhile to take the time to create original content that sets your site apart. This will keep your visitors coming back and will provide useful search results.

There is no problem in being an affiliate as long as you create some added value for your users and produce valuable content that gives a user a reason to visit your site. For example, you could create product reviews, ratings, and product comparisons.

If your site has been removed from our search results, review our webmaster guidelines for more information. Once you've made your changes and are confident that your site no longer violates our guidelines, submit your site for reconsideration.







Link schemes

Your site's ranking in Google search results is partly based on analysis of those sites that link to you. The quantity, quality, and relevance of links count towards your rating. The sites that link to you can provide context about the subject matter of your site, and can indicate its quality and popularity. However, some webmasters engage in link exchange schemes and build partner pages exclusively for the sake of cross-linking, disregarding the quality of the links, the sources, and the long-term impact it will have on their sites. This is in violation of Google's webmaster guidelines and can negatively impact your site's ranking in search results. Examples of link schemes can include:

* Links intended to manipulate PageRank
* Links to web spammers or bad neighborhoods on the web
* Excessive reciprocal links or excessive link exchanging ("Link to me and I'll link to you.")
* Buying or selling links that pass PageRank

The best way to get other sites to create relevant links to yours is to create unique, relevant content that can quickly gain popularity in the Internet community. The more useful content you have, the greater the chances someone else will find that content valuable to their readers and link to it. Before making any single decision, you should ask yourself the question: Is this going to be beneficial for my page's visitors?

It is not only the number of links you have pointing to your site that matters, but also the quality and relevance of those links. Creating good content pays off: Links are usually editorial votes given by choice, and the buzzing blogger community can be an excellent place to generate interest.

Once you've made your changes and are confident that your site no longer violates our guidelines, submit your site for reconsideration.






Automated queries

Google's Terms of Service do not allow the sending of automated queries of any sort to our system without express permission in advance from Google. Sending automated queries absorbs resources and includes using any software (such as WebPosition Gold™) to send automated queries to Google to determine how a website or webpage ranks in Google search results for various queries.





Parked domains

A parked domain is a placeholder page for a domain that is not yet developed into a website. Often this is entirely legitimate - for example, a webmaster may put up an "Under construction" while the site itself is being built.

However, some webmasters register domains and park them in order to monetize those pages. Typically this is done by filling the pages with ads in the hope of gaining pay-per-click (PPC) revenue.

These parked pages don't provide value to searchers, so we don't typically return them in our search results. If you have parked domains, activate the domains and fill them with useful content to make them eligible for being indexed and returned in search results.

If your site has been removed from our search results, review our webmaster guidelines for more information. Once you've made your changes and are confident that your site no longer violates our guidelines, submit your site for reconsideration.

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