@Asado #6 - I think this f3/Kf2 and f6/Kf7 stuff is part of an old hoax on ICC / Internet Chess Club - what was at one time the top chess site.
There was a player who created some accounts on there and somehow managed to convince people he was Fischer. This was before Fischer was shown to be in Iceland/Japan and so there was still a sort of super-human allure to him for alot of players. He would come on the site, play these junky moves and crush top GMs. Nigel Short for instance was 100% convinced it was Fischer.
Of course he was just cheating, but he was a smart cheater and would occasionally play on his own and also mix up his move times creating a modestly believably image of just some like 3800 strength player toying around with GMs like a cat playing with a mouse.
Following that there was a huge surge in f3/Kf2 and f6/Kf7 as people saw all these top players get crushed by it convincing plenty of folks that maybe there must be something to it after all because everybody obsesses over openings after all. And in any case if it works against Nigel Short how can it not work against your opponents? ;-)