Yeah this would be it!
Don't ruin it >:T200th for the moment, at least. Threads that have been inactive for a month or more get archived whenever a staff person gets around to doing it.
Also that 200+ count you see on the index page includes the threads in the Counseling and Bored Games section. There are currently only 141 threads (not counting the 5 stickied ones, I think) in the main General Chatting area.
So enjoy your thread that is temporarily the 140th in the section. :P