To be fair I haven't used it for about a year. As I recall I joined about 40 rooms though and not all were busy. But I think in general if your question is esoteric you would have to peel of into a room with someone with the domain specific knowledge. Some problems require a wordy description of the problem and that wont fly well in a live chat. I was really just after verification that my solution was optimal. But sometimes there just isn't a better way.