I don't know if this is new... but I just typed the word "frost" on google.com main search and got a new green box look with Wikipedia content. Check it out!

You subscribed to Wikipedia in Google Coop.

http://www.google.com/coop/profile?user=016597473608235241540

I just placed a commend here:

http://blogoscoped.com/forum/79650.html#id79650

about the google switching cost introduced with Google Apps (and api's).

Does Google Coop introduce switching cost? Currently it's not very easy to use, but I can see Google bringing this to the front-page. If everyone has a customized search engine every other search engine is worse...

*-)