[mike l.]

fold but it's something like a spade on the flop, or a gutshot draw, that turns it into a call or a raise.

spade on the flop=call.
gutshot+spade=raise.
nothing but overcards and blinds to act behind you=fold.

oh also if you had ace high that'd be more reason to raise instead of call if you had any piece of it at all. also if the pot were 3 way instead of 4 way that would lean towards continuing with the hand.

but as it stands it's a fold and it's pretty clear.

i love threads like this because this is something i face a lot being a chronic raiser.