Greg kindly invited me to beta app called Xobni. (cool name by itself, but it's also word Inbox in reverse!)
It's an Outlook plugin that indexes your mail and the provides different kinds of stats (like average response time of a person) and builds a social network of your contacts, so when you are looking at the mail from a friend you'll get a list of connected contact. Pretty neat.
Xobni looks great and while it's not super useful I do throw a look at it couple of times a day and get a piece of information way faster than I would if I had to browse other mails. But it's also a paradise loosing time instead of doing real work. What more could a geek want!? That alone is a reason to try it. ;)
I didn't find any info if it's going to be free after beta or not, but I really hope Microsoft buys them. Obviously they like Xobni.
You'll learn everything without installing by watching promotional video.
I have couple of invites left, so if you are interested, drop me an email.