I did this earlier with a suggestion that everyone agreed would have been a good idea, but was turned down for Steam's shady Group Chat coding being difficult to deal with.
http://www.skial.com/threads/steam-admin-group-chat-implementation.6015/
I recommend we have a plugin to do "!contactadmin" and it will link you to that Steam Community page. That way, people could see which admins are online, and click their icons to message/add them. It wouldn't require upkeep, since all you are doing is linking everyone typing in "!contactadmin" or whatever we choose upon to a single, static URL.
http://www.skial.com/threads/steam-admin-group-chat-implementation.6015/
I recommend we have a plugin to do "!contactadmin" and it will link you to that Steam Community page. That way, people could see which admins are online, and click their icons to message/add them. It wouldn't require upkeep, since all you are doing is linking everyone typing in "!contactadmin" or whatever we choose upon to a single, static URL.