This eWeek interview with Ray Ozzie, the creator of Lotus Notes and more recently Groove Networks is an interesting read. In it, he talks about the new version of Groove, v3 which features integration that enables work styles “between Microsoft Office and the file system.“ 

From the article:

“Anybody who wants to understand where the future of how you can cope with lots and lots of stuff going on… if you want to see where that's going, get into Groove. That's what we've been doing for the last couple of years, looking at how our users are dealing with lots of information going on in lots of shared spaces and packaging that information in a highly aggregated form with prioritized notifications and so on.“

Can't wait to check out Groove 3.  I'll let you know what I find!