The sub-set forums have been been re-jigged, presumably to get rid of the AIBU default.
But why get rid of Talk? You're pissing in your own chips, MNHQ.
It now takes three clicks to get to where I want to be, instead of one. And I know where I'm going, but what about newbies?
Try the TES mode, where all forums are available down the side when you're on any one forum. Oh, hang on, that would leave no room for your advertisers, who are more and more evidently important then your members.