http://www.messengergroupchat.com/
Messenger Group, developed with Windows Live Messenger platform, is a
service for a group of Messenger users chatting together in real time. Maybe
you think that Windows Live Messenger supports multi-conversation, but this
multi-conversation is temporary, will be dismissed with the finish of
conversation.
Compared with multi-conversation, Messenger Group is an existing group with
each member in, members can talk together at any time without creating a
temporary multi-conversation. Messenger Group makes a group of people
connecting closer, no matter whether they are on your Messenger contact
list. You can create a group for a team, a department or a company to chat
online together.
Now if you have a Windows Live ID, then go to Messenger Group website
(
http://www.messengergroupchat.com) to create your own Messenger Group.
Free to create Messenger Groups
Each Messenger Group can have 900 members at most
Group manager can change group name and display picture
Group manager can set an administrator to help manage group
Group member can change their nickname in the group