is an online community that connects people through a network of trusted friends. Earlier you required an invitation from exisitng orkut member to join the community. orkut is finally available for everyone, now anyone can join orkut for FREE. And is very much confirmed in orkut's help.
orkut's integration with Google Talk is also live. You just have to go to settings and click on "enable Google Talk". You can automatically add your orkut friends or only some of them. You also gain new options in Google Talk for orkut contacts.