You think of a character and it tries and guesses who you are thinking of in roughly 60 tries. And it knows who Warren Ellis is. Though I find it humorous that the question it asked to differentiate Ellis from Alan Moore was, "Is your character known for being excessive with substances?"
It got to Detritus surprisingly fast, given that it just went via fictional, non-human, literary, tall policeman. Oh, I think fighting and lacking magical powers were in there somewhere too. I'm liking this more than I expected to.
Pretty awesome, it got the Scarlet Spider on the second attempt (first guess was Batman, which didn't bode well) but then my girlfriend took over and it nailed Uesugi Tatsuya from the manga Touch, which is fairly incredible.