No kidding. You wouldn't believe some of the utter steaming piles of crap that get posted there to be made fun of.
And some of it is just plain WRONG. In one recent story posted, there was a massacre in Metropolis... So Clark Kent leaves his wife Lois and goes to Gotham where he commits adultery.. with BATMAN. *cringes again*
It is a site dedicated to lambasting an snarking bad fanfiction in "Mystery Science Theatre 3000" style. Basically, since most fanfiction not only sucks, but is Batman and Robin-or-worse level crappy, it is a way to let of steam at the fact that most fanfiction is written by little kids who think that Legolas kissing Will Turner is hot because they're played by the same actor and other such inane crap.