Vlad from Carpe Jugulum is a young(ish) vampire who falls in love with a girl because she's different—he can't read her mind. Ok, Agnes Nitt is a witch who's always in two minds about everything, but why does this storyline sound familiar? Maybe Twilight started out as Terry Pratchett fanfiction? Or, maybe the Magpyrs caught Ms Meyer's subconscious fancy at some point, and sat there till they became the Cullens?

Of course, I could maybe be over-reacting just a little to an innocent coincidence... but I don't think so.