I have talked about Xobni several times before and absolutely love this product. It turns out Xobni is a Microsoft Startup Accelerator Program partner. There are lots of benefits to the program like free software, consulting help, press releases, introductions to Microsoft people, partners, and even VCs. One benefit that wasn’t anticipated was a demo by Bill Gates at the Microsoft Office Developers Conference. Check out this 2 minute video of Bill talking about Xobni; then check out Xobni.