Find below the list products/services which are going to be closed by Google.
Google Wave will be turned off completely on April 3, 2012. Wave users can export the individual wave to pdf files.
Google Friend Connect (GFC) allows webmasters to add social features to their sites by embedding a few snippets of code. It will be retired on March 1, 2012. Google recommends using Google+ badge instead of this retiring service.
Google recommends the Knol users to use Annotum.org, which is powered by WordPress and was built in collaboration with Solvitor and Crowd Favorite for moving the knol content.
We have lot of knols and Knol Collections including a knol about Anil Mishra which is getting around 200 page views every week without doing any promotion.