According to the CRN Australia article: Google snaps up Gaim programmer, Google has recruited another well-known programmer in the instant messaging space. According to CRN Australia, Sean Egan, the lead developer of the open-source Gaim instant messaging project, has left open-source, multi-protocol IM project the to work at Google in Seattle.
"The goal of Google Talk is to make real-time communication as open as possible, and in that regard, I've been working to offer all of Google Talk's features into other clients," wrote Egan. "Currently, I'm working on making it as easy as possible for other clients to use Google Talk's voice features."
Gaim was a participant in Google's Summer of Code initiative.