@nik
No idea where the idea comes from, that #Jabber would have less problems with #spam than other federated communication systems 馃し
There are some tools in place, e.g. #RTBL and #messageModeration, which are great. But that's not sufficient.
We need new gate keeping schemes for large group chats. Open group chats are prone to spam, closing them puts too much acceptance work load on #MUC admins. I'm not yet sure, how a "semi-open" solution could look like.