In any event, Yahoo! Messenger 2.0 allows voice and video calls to other Messenger users on iPhone 3GS and iPhone 4, Macs, or PCs running Windows. iPod touch is supported in this release.
The update also adds better multitasking support for iPhone 3GS and iPhone 4 devices running iOS 4.1 or later.
Yahoo! Messenger is a free download, and it is available now from the App Store.
This Messenger user apparently only has very pretty friends
A Yahoo Messenger 2.0 Video Chat