Site owners feared for the use of programming languages to display content useful because Google Bot can not run Java or Ajax scripts and so the content page could not be properly indexed by search engines.
The folks at Google have announced that Google Bot New can run some scripts Ajax and Java, being able to index this type of dynamic content.
While Facebook did not seem too interested in the search engines indexing comments, Disqus is working hard to reduce this problem by developing the SEO Data Synchronization in Disqus API that allows you to display HTML comments on WordPress blogs.
Following this change, regardless of the strategies of large companies, most end users will gain will enjoy a pleasant web experience.
I'd like to hear your point of views regarding this matter..