Most of the services google offers has a twitter account attached to it. It helps them to communicate with the vast majority of google fans and keep them updated about the developments in Google Products. If you are a regular twitter user and indeed follow and use some of these google services then you should follow them at twitter too… Here is a short checklist of twitter ID’s of google services:
twitter.com/gmail
twitter.com/GoogleTV
twitter.com/Blogger
twitter.com/GoogleChat
twitter.com/googlevoice
twitter.com/YouTube
twitter.com/googlemaps
twitter.com/googlecalendar
twitter.com/GoogleMobile
twitter.com/googlestudents
twitter.com/googlereader
Many more google services might have already joined the list apart from these by the time this post is published.