I guess this should be in the suggestions forums, but there was already a discussion here. I agree though, real time chat would interest me - but you should probably discuss it over on the other thread.
If there is enough interest, we can do this. What we don't want to see happen, though, is for us to put up a chat room that sits empty most of the time.
If the interest isn't there at this moment, this is something that we can revisit once our traffic grows. We're currently growing at the rate of 10-20% a month, so we'll be there sooner rather than later.