Two Girls For Every Boy (http://ffmftw.tumblr.com/) is the spot for all the ffm, fffm, ffffm, ff, fff, etc. action you can handle. Hot fuck action to the max!
Darker Joys (http://darkerjoys.tumblr.com/) is the redheaded, latexclad, cumslurping, painaddicted stepchild that is still trying to find its legs. Things are a little darker over there, but not too dark.
Lastly, Daughters Of Joy (http://daughtersofjoy.tumblr.com/) is the least raunchy of the CLEVERFUCKER Network. Mostly tons of pretty ladies in various states of dress and repose with nary a dick to be found. And yet it is titillating to the extreme! Have at it.