You can run but you cannot hide .....

Image http://freedomforbidden.blogspot.com/2010/09/what-can-you-do-and-what-you-cant-do.html

According to Search Engine Land  Google is indexing Ajax/JavaScript content.

November 11 - This update means comments made on Facebook and the sites that use services such as the Facebook Comment Box “can” now be appearing on Google search result pages.

You can run but you cannot hide!