I know a lot of people don't look in Site Stuff, so click here for the thread in which MNHQ announce that as of Monday (20th August) the 90-day limit for Chat threads will be removed, and if you want the thread to disappear you'll have to post in the thirty-days-only topic. They haven't pinned it anywhere yet and Site Stuff isn't often frequented so I just thought I'd put it out here.
waits for thread to be removed as it's probably a TAAT