Nick Denton has written two posts for product.kinja about Kinja Group Chats and conversational circles. It kind of looks like something's going to change and we all might be talking in little groups to each other or shouting in a closet or something. It's not really clear because other than the product.kinja and Valleywag, I haven't seen it in the wild and the fixed-width sidebar makes it kind of hard to read because the formatting is so messed-up.

I'm sure they'll fix it or maybe it'll just be another thing they tried, but whatever it is, there's a couple of posts to product.kinja that you might want to try to read.

ETA: I've added a Kinja Help tag to this post, so they'll be aware of the formatting thing.