Quickseller isn't active for about two days and look how quite the forum is.
He had a
LOT of alts.

Catching his alts is like choosing all the green balls from the ball pit. Quickseller talks unlike anyone else. It's too easy to separate his lingo from the rest.
Not really. According to you, BiPolarBob = QS, and IMHO they speak pretty differently. QS isn't dumb; if he had undiscovered alts that he was actively using, he would not use his old "lingo".
BiPolarBob is Quickseller and that's a fact.