OK, let me climb on my soap box.
IMO, no chats on this site. Not even the threads. Say we go in, delete one every morning, and get lots of "hey why did you delete...!!!!!!!!!!!!!!!" No way.
And there is no way, regardless of what people say, that it will be kept "clean." That doesn't happen now with current "chat" threads which take up far too much room as it is, IMO. Heck, it didn't happen with the post a picture thread - which is the common fate for many of those types of threads in the past as well.
I am definitely a hard liner on this issue, having never been a particular fan of the Aquarium in general, and the trouble that often brews here. In some ways, people can have tremendous discussions on topics that wouldn't see the light of day on other sites...and I'm pretty proud of that...and then turn around with complete trash in other threads. And unfortunately many of the "other threads" dominate.
So I will never support the idea of a chat thread or section on this board. I think that there are many options available to people on the internet as mentioned above - lots of chat options. That is where it should go, IMO.