Someone has invited you to preview Google Wave!Makes me think of this article: Google Wave: we came, we saw, we played D&D.
Google Wave is a new online tool for real-time communication and collaboration. A wave can be both a conversation and a document where people can discuss and work together using text, photos, videos, maps, and more. Learn more at wave.google.com.
This is still an early preview of Google Wave, so you may run into some bumps along the way but we look forward to your feedback.