The impact of Flash and Ajax on SEO

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Excessive use of flash and Ajax technology can cause a lot of problems for search engines. Because search engines do not well index Web pages that are completely represented by flash or Ajax. The reason is simple, search engines only index pages, not the application.

In addition, even if the search engines can fully interpret flash files or AJAX applications, and can analyze and index their related content, there is no way to use the URL to navigate the application. The main purpose of the search engine is to submit the search results to the user, but when processing these media information, the search engine will not be able to arrange the order of this information. In short, flash and Ajax bring more creativity, but also lead to more difficult to detect the emergence of spam sites.

We do not completely reject the use of flash and Ajax, there is a way to overcome these problems. Web designers should use it only where they need to use Flash and Ajax, which is the so-called harmonic method (blended approach). Designers should design Web sites primarily in HTML, while using Flash and Ajax as assistive technologies to deliver tangible benefits to users. At design time, you want as much HTML-based text content as possible.

Typically, the mix of HTML and JavaScript (DHTML) can basically achieve the effect of using these technologies. For example, click a button to show or hide an HTML div cell. This allows you to set a small flash or Ajax unit in a traditional HTML layout. That is, you should use Flash and Ajax as a unit on the page, not as a page.