I pop in about 3-4 times a week, and various times of day, and it seems I almost never get anyone in there. Last time I wandered in, there were actual, talking, live people. I was shocked.
I usually check in around 7:00am CST, then I'll be around anywhere from 6:00-11:00pm CST. There are times when it's really slow, especially with most of people chatting being in England, but you can catch people if you know when to get on. It's a lot of fun, so everyone should try! And remember, if enough people are doing it, there will be someone to talk to almost any time you get on.