Originally Posted by WVHillbilly
Why? What's your reasons for giving this advice?
A fold is probably no so bad, but a raise is quite OK also. This is why:
Given the preflop action, the range of all 3 opponents definitely contains quite a few jacks (with medium to low kickers probably), but also most pocket pairs that you beat, and suited conector type hands.
On the flop, the first acting player is not likely to hold the jack, when he shoves he is much more likely to hold a medium pocket pair (you see shortstackers shove PPs on a paired board a LOT at these stakes). He may even shove a flushdraw, as the pot and stack sizes gives him close to good odds
on his FD should one player call, and very fine odds should two or more players call. Holding a jack in this spot many players would be more inclined to checkraise.
Same line of reasoning applies to the possible holdings of the next player to act, although his range is a bit skewed towards the jack. Still, a FD is likely to call due to the odds.
The player behind you has a broad range and given the action to him so far he is likely to fold anything but the very top of his range on this flop, so he should be easily pushed off the hand most of the time.
Let's say you put in a raise.
If the player behind you fights back, you know he has you beat and you can fold. But the vast majority of times his holding is too weak for a 4-way pot on this board and he will fold.
When he folds, you have 55-60% equity against the two villains, if their range is something like I described above, and you get better than 3:1 on your money.
Doing the EV calculation, it's comfortably +EV to raise instead of folding.