It looks like the smart guys at Xobni are getting their dues. Microsoft have a letter of intent ready to buy them up.
If you haven’t used Xobni, it’s really something that should have been in Outlook from the start. It offers great views of who and what you exchange email with, letting you quickly find ‘that file they sent you yesterday’, related contacts and threads. A very useful tool and a new look at that pile in your Inbox.