As a Domino Developer, this makes me really, really sad.  This is the moment in collaborative computing where Darth Vader joins the dark side.

Microsoft to buy Groove Networks | CNET News.com:
Microsoft to buy Groove Networks

Published: March 10, 2005, 6:04 AM PST

By  Martin LaMonica
Staff Writer, CNET News.com

Microsoft on Thursday said it will acquire Groove Networks and make Groove’s founder, Ray Ozzie, chief technology officer at the software giant.

Terms of the acquisition were not disclosed.

Microsoft said it will incorporate Groove’s “virtual office” collaboration software into its Office line of desktop productivity applications. Ozzie, the inventor of Lotus Notes and a collaboration guru, will report to Bill Gates, Microsoft’s chairman and chief software architect.

Microsoft was an investor in Groove, which has closely tied its collaboration software to Windows and other Microsoft products.
“After working with Ray for years as a close partner, it will be great to have him on our senior leadership team,” Gates said in a statement.