WOW! Microsoft are buying Groove:

http://www.microsoft.com/presspass/features/2005/mar05/03-10GrooveQA.asp

and  http://news.com.com/Microsoft+to+buy+Groove+Networks/2100-1014_3-5608063.html?part=rss&tag=5606366&subj=news

I have used Groove in the past and was very impressed by the way it worked both as a Peer to Peer system and also as a offline / online engine. In fact it provided a wonderful basis for a whole new way of working that I was building a few years ago with just a couple of key elements missing.

Very interesting.