i thnik teh fake 3 decks djs are the ones who use three decks to spin records in the same way as 2 dacks ie start to beatmatch a record after having finished to mix the two previous ...

usually these are the promoters who say a dj spins on 3 to get more people in their party, but the djs dont really "overrate" themselves ... they dont care about this till they beleive in the musci thayre doing, at least thats what i do though i tend to be a bit bored on 2 =)