I don't support it in MU*s because of the high probability of minors accessing those games.
This is really the crux of the discussion here.
Minors do access MUs. Maybe not in the volume and frequency they did when we were all teenagers, but they do.
And ousting pedophiles from our community is something we can all work together to do, vs. trying to play it off as 'well it's not video....' 'well it's not in person....' Except how many of us do engage in OOC/RL friendship/communication? How easy does a MU make that to happen? Pages, @mails... these aren't monitored for player safety.
So I am 100% behind disallowing this behavior to be engaged in on any level within our community.