Online Chats with Big Name Authors

Xfire is hosting a week of online chats with science fiction authors next week. They’ll have different authors each day, and offer readers a chance to ask questions and chat with them (Xfire is also offering “awesome prizes like signed books”).
Their scheduled author guests are:
Monday 13 August: “the 2007 Hugo Nominees Chat” with Charles Stross, Vernor Vinge, Peter Watts, and artist Michael Whelan.
Tuesday 14 August: Kevin J. Anderson and Brian Herbert.
Wednesday 15 August: Jim Butcher, Larry Niven, and Jerry Pournelle.
Thursday 16 August: James Patrick Kelly and R Stevens.
Friday 17 August: Dan Abnett and Spider Robinson.
To register for any or all of the chats, see this page.
Xfire claims to be “the ultimate tool for any PC gamer. It combines instant messaging, a server browser, peer-to-peer file downloads, in-game messaging and one of the most active gaming communities in the world into a small, simple package.”