Troll box? A chat interface is different than a troll box, if what I've seen elsewhere is a troll box.
I hate the damned things, they just provide a lot of noise and nonsense to distract what I'm there for. If people more or less stayed on point like the chat window in mumble I could see it possibly being useful. In my experience it's 50 zillion convos between separate groups of people and hard to track a single group / convo.
If you know what the old school telephone party line was, a troll box is like that but with many different conversations occurring in real time simultaneously. It would be like a mumble session where fuzzy is talking with BM on one topic, I am talking with Stan on a different topic, DataSecurityNode is talking with kencode on yet another, all at the same time in real time. A real audio mess. That's how I feel a troll box is in text.
I'm OK with adding one so long as it isn't visible by default. It would be a terrible I/F for support. Private chat on the other hand would be perfect.