Google Personalized Homepage added comments, ratings and recommendations for gadgets, but also themes.
Picasa Web Albums has community search, an API and upgraded the free accounts to 1GB.
Google Notebook has a new design and is no longer in beta.
Google Talk Gadget can be added to any site, including Google's Personalized Homepage.
There's a new version of Google Desktop that adds instant preview, malware warnings and an updated sidebar.
Google Pack includes an upgraded screensaver that shows photos from the web.
There's a new version of Google Mobile Search and Google tests a new search engine.
All the posts from March