As of now to use Google talk, user should have Gmail enable then only it is possible to chat via Google talk so for those who didn't have Gmail enabled for their account user may have found it odd that Google Talk was not available in Orkut. Well, now Google Talk Team is enabling chat for all Orkut accounts, without the Gmail requirement
So what it means? Any Orkut user will be able to chat on the Google Talk network using their existing email (non-Gmail) address as their user name! To use this new feature, user require to do a simple email verification.
So How it works? Those of you who have been paying closer attention might have noticed that chat for non-Gmail accounts already works in the new version of iGoogle. (available for some users, slowly coming soon to everyone) Well, Google using XMPP open slandered to allows users to chat using an email address that is not hosted at Google, it preserving existing interoperability with 3rd party XMPP clients and server-to-server communication with other XMPP networks. It also means that we can do multi protocol chat with other networks like Yahoo Chat, AIM & networks who using Jabber.
