Concerns for trolling and the need for supervision, plus the heavy bump in 'dynamic' traffic are the reasons I voted no. I just don't think CD is the place to host something like this, every few years people try this and usually end up going to IRC, I've yet to see a better option.
Given the amount of services the CD community provide to us on a completely volunteer basis, I'm reluctant to ask them to add more stuff that can be accomplished with other systems, especially given how hard it is to keep order in a place like this. Most internet forums I know of are pretty messy, the people here do an utterly
fantastic job keeping things here clear, let's not give them more work to do
Matt
P.S. They don't hear this enough, so to Brandon Martus and the whole CD team, thanks!