It seems like just yesterday that Yahoo! Messenger 10 entered beta, showing off new video chat and social networking features. Now it's all grown up, out of beta, and replacing Y! Messenger 9 as the default version on Yahoo's download page. Folks upgrading to version 10 get the benefit of several nice new features, including video calling and integration of streams from social sites.

Yahoo! has made some big improvements to its webcam feature, adding better video quality, synched audio and a full-screen mode. You can also move your video call windows around and place them side-by-side. It also supports video effects. To make video calls, both sides need to be on Yahoo! Messenger 10.

The other big addition is a social streaming view called Y! Updates, which lets you see your contacts' updates from several social sites, including Twitter, Last.fm, and Yahoo!'s own Buzz. Of course, it also shows your friends' Messenger status messages. However, CNET suggests you do a custom install of Yahoo! Messenger 10 rather than the default installation, so you have more control over toolbars and other additional junk that comes with Messenger.