Adobe, Google and Yahoo announced earlier this week that they are working to make Adobe Flash content more easily indexable by search engines…got a lot appreciation but there is almost no one that knows Microsoft Silverlight already has this feature.

Marry Joe verified it from Microsoft and received the following statement from a company spokeswoman on July 2:

Microsoft designed Silverlight from the beginning to be easily accessible by search engines.  Because it is simply a ZIP archive, a Silverlight application packaged in a XAP (the Silverlight application-package file extension) file is easily accessible to search engines without a special software development kit (SDK). And because XAML is W3C-compliant XML, any static textual XAML content can be easily parsed by search engines.  Furthermore, any metadata embedded in the ZIP file is easily indexed by search engines as well.  Silverlight applications also support “deep linking” as they easily consume the URL they were loaded from, and use information on the URL query string to rapidly load and display appropriate data.  Finally, the Silverlight DOM itself can be easily inspected to detect all text, links and images that are being visualized by the control.

So does this mean that Silverlight offers customers superior search engine optimization (SEO)? Yes.  Not only was Silverlight architected to offer superior searchability, but Silverlight excels at enabling dynamic content published from content management systems to be easily indexed by search engines.  By publishing dynamic content to Silverlight via XAML and XHTML mirroring, users are able to dramatically reduce the time it takes to optimize content for search engines.

Indexable features of Adobe Flash are poorly indexed by Live Search that makes another reason for not using Live Search.