| if someone raises, you fold....
actually, i've folded pocket 2's and 3's in early-mid position many many times, just so i dont put myself in a compromising situation where i feel i'm "married" to the pot.....
in late position, with more than 3 "limpers" i'll raise, to try and force the other weak hands out....
if they call, you still have position and have to play your aggression out to the end, unless you know for certain you are beat, and then you fold....
then again, i play my pocket jacks like a small pocket pair (coz i hate the jacks so much)....if i dont hit my set on the flop and there is ANY overcard out there, i fold immediately.....
just my nickel,
but like other people said, "it depends"...
free,d | 
