Merry Meet Amoluce
I was in the same boat as you reguarding what to do next after msn closes our chatgroups down. Msn has offered us a option which after checking it out I decided was close to the bottom end of options available. Myspace or Bebo would have been better, but at the end of the day I have found we mostly use the forums, to share and do the real learning that happens on the internet.
As i said I have built a website and I am offering it to others on msn to use, the more the merrier!
The forum works well, we can add pic and videos endlessly (msn can limit us no more) and the domain name is easy to promote and remember. So i hope this option is a winner with you all here.
I can add forums as you need, just ask.