If you're running a somewhat bigger group (> 1000 members or so) be careful if you want to use group chat. It's still broken, meaning quite often message B shows up before your message A does. If you are able to use it at all, that is.
And - you still cannot disable chat for all except some moderators, so a group always tends to get "spammy" from time to time. Many people now have a very short fuse if reading messages from a group chat, too. Most times it's just a waste of time, anyway.
Like Jenny saying "hi", Mike saying "hello", Jenny asking "wanna dance" and so on and on...