about a chat program called Paltalk.
There is a room in the Religion and Spirituality section dedicated to atheist vs. theist debate and it is almost always hopping with activity.
It probably doesn't help our cause in any way since most of the theists who enter the room are of the I-know-I'm-right-and-I'm-going-to-show-these-godless-heathens-a-thing-or-two sort, but it's fun anyway. And there are some interesting atheists who hang out there. At the very least, a person could learn a lot about philosophy and science by listening in for a while.