Download New Google Talk Labs Edition
Google has improved its chatting program GoogleTalk. In this new version you can hide from your contacts like in MSN Messenger or Skype.

Google Talk
Google Talk was created few years ago as an attempt to give IM market a new participant. Every Gmail account holder can use Google Talk to chat with his friends and colleagues.
A new improved version of Google Talk you can now download is called Google Talk Labs Edition. New features are added which isn’t available in standard version. Those who use Google Calendar now will be able to receive notices of upcoming meetings and planned activities.