From the Meebo blog:
We’re super excited to debut applications inside meebo! Just click on that shiny new rocket ship icon in any IM window and then select which app you want to launch with your buddy. The first type of application we’re showcasing? Drumroll please… Voice and video chat.
So many of you have asked for this feature from day one and now you can video/audio call (TokBox), voice chat (Pudding Media), and group voice call (TalkShoe) on meebo, plus you can even create your own live TV show (UStream) to share with your friends!
You can sign up here, my nick is Briosafreak if you want to chat.