re: Poker & Fold equity...
Pulled this off of http://www.pokerlistings.com/strategy/all-you-need-to-know-about-fold-equity
Thanks for the link tcummo
In no form of poker do you rely on fold equity more than in tournament poker.
As the blinds increase and your M value (http://www.pokerlistings.com/tournament-play-midrange-m-value) decreases, you're going to need to start stealing blinds (http://www.pokerlistings.com/blog/pro-tips/stealing-the-blinds) to keep afloat. If you do not steal blinds, you won't last long. The blinds will swallow you up and your tournament will be finished.
Most tournaments see rapid blind increases. There just isn't time to sit back and wait for aces. You have to make do, and you make do by "stealing" with worse-than-average hands.
(http://www.pokerlistings.com/assets/photos/allen-cunningham-19862.jpg) Full Tilt (http://www.pokerlistings.com/content/full-tilt-poker) pro Allen Cunningham (http://www.pokerlistings.com/poker-player_allen-cunningham): Big fan of stealing blinds.
Let's say you have seven BBs in the late stages of an online multi-table sit-and-go (http://www.pokerlistings.com/poker-tournaments). The average stack is likely around 15 BBs, and the chip leader may only have 30 BBs. It's time to get moving and accumulate some chips.
In this stage of the tournament you have two options, shove or fold. (This article (http://www.pokerlistings.com/strategy/sitandgo-essentials-part-3-shorthanded) fills in the background as to why these are your two choices.) As we established earlier, good hands are not going to come along fast enough to save you, so you must start shoving worse-than-average hands.
Shoving a hand like T♥ 9♥ isn't a play made for value. Your goal is to have your opponents fold so you can take down the blinds and antes without a fight.
You rely mostly on fold equity. That's not to say that you should push any two cards and rely completely on your opponents folding, because that just isn't going to happen all the time.