MSN just gave us a good quick kick in the bum. Let's not make it worse by acting emotionally and irrationally and doing things we will later regret. Don't abandon your MSN groups. Your members need you to maintain them now more than ever. Don't be in a hurry to migrate or move anywhere. Assure them that collectively as a group you will survive. It may not be on MSN, but you will survive. You may wind up with something better.
(the name of  the group)  has been through this when it was still a relative baby. We had less than a thousand members and only a handfull of active chatters when MSN announced they were canning chat. Many jumped ship and bailed. I guess they figured a group that was chat based was a dead ducky. With Your help, we not only survived, but we have grown to almost 10,000 members with hundreds of active groups using Our Chat services... our chat services that are completely independant of MSN and will survive beyond MSN.
We have several months to figure out how to fix this impending mess. Help us help you. Take the time to educate yourself by asking questions on relative threads. We may have a series of Q & A chats as well as polls on the boards. Take the time to attend and participate.
We have no immediate plans for migrating this group, deleting it or transferring its contents anywhere. We have not explored all our options yet. We will announce it well in advance before we do anything. We recomend that you accord your membership the same courtesy.