Google recently announced a new service that integrates into Gmail, called Google Buzz, it is a unique approach to Social Networking over top of traditional email. You can view the demo in the video below.
Some of you may be thinking, how the fuck is this different from Google Wave? Well the truth is, it does overlap in some areas, but they are different services.
I really enjoyed this comprehensive article on Google Buzz from Tim O’Reilly, you should read it.