The MSN team have apparently been working on social networking features for MSN Messenger, Spaces, Hotmail, etc.
If thats the case I think we may need a new limit on the number of contacts in MSN Messenger (300 wont be enough for lots of people).
Oh - in case you are interested one of the MSN Social Networking Product Managers blogged on it here. I like this sentence the best:
I can only hope our users have as much fun using our software as we had building it.
It has a certain past tense ring about it doesn't it... 🙂 I think this will be really exciting. I'm looking forward to the next two months!