The answer has pretty much been covered, but I'll reiterate. This is cut and pasted from my e-book, which I've begun self-editing (since apparantly TP is not going to

), which I plan on having available in the next month or so...so if you'd like more, you know where to get it.
The Stop and Go Technique
The Stop and Go technique is a very effective technique to use WHEN THE SITUATION CALLS FOR IT. We’ll use a tournament setting, blinds are 1000/2000 and you have 16,000 in your stack. Say you are in the small blind with a hand like JJ. A tighter player makes a raise from LP to 6000… you see your jacks, like the pot size and you are ready to risk it here… if he has AA-QQ then congrats, if you are in a race hopefully you win… otherwise even better you take down the pot uncontested. You move all in, your opponent asks how much more, and when he finds out it’s only 10,000 more he decides to call. He flips over AQ and winds up rivering an Ace to knock you out of the tournament…you chalk it up to bad luck and hope to win the next race.
This player failed to use the Stop and Go technique in this instance… if he had, there is a good chance HE WOULD OF WON THIS POT. Using this technique, is when he would of JUST CALLED the raise of 6000. Then once the flop hits, being first to act, MOVE ALL IN NO MATTER WHAT. If he had done this, and the flop comes 8d 7h Kc, there’s is a good possibility that our opponent would FOLD his Ace Queen, since the flop missed him and all he has is ace high…thus he wouldn’t be around to catch his river Ace In essence, you are giving your opponent only 3 cards to catch his overcards, rather than 5… so it is no longer a coin flip – the odds are swayed in your favor
This technique can also be used with big cards. Let’s take the same situation, only this time, we are the ones holding AQs in the SB and are faced with the same 6000 chip raise. We could raise 10,000 more, all-in, and wind up losing a race to TT when nothing hits for us…OR we could use this technique. In this case, we’d again just call the raise of 6000. Then once the flop comes move all in no matter what. The flop came 8d 7h Kc. Maybe our opponent with TT is now concerned that we hit our king, and he thinks he is drawing to a 2 outer, and makes a fold. He certainly isn’t folding to our reraise preflop though. Using this technique with big cards, it lets your opponent see 3 potential ‘scare cards’ if he is holding a pair… which may get him to lay down his hand.
The obvious downside to this play, is that if your opponent made the initial raise with a medium holding (say Queen Ten), you are letting him see a flop in which he can hit his Queen and then knock you out. For another 10,000 he MAY lay down this hand if you had pushed preflop, but in general, most hands which opened will call your push here.
To use this technique you must be OUT of position. The reason being, if you are in position, and the preflop raiser, being the first to act, makes a continuation bet, he often will commit himself to the hand, thus you accomplished absolutely nothing.
Although this is a technique that you will use when you are short stacked, you must have a large enough stack that your all in bet on the flop can get your opponent to fold… if not, it’s pointless. If you call a 6000 chip raise preflop and then move all in for 3000, your opponent isn’t going anywhere.
Finally, your chip stack must be to the point where if you reraise preflop, it’s going to be all in.
A final note thrash.... when using a stop n go you move in NO MATTER WHAT. You don't see the flop, get scared and then check fold, otherwise it's a wasted play