I've learned the importance of aggressive blind defense thanks to this bonus clearing at PS. I used to just call with my decent hands, raise with the premiums, and fold the rest. I've learned you should sometimes push over the top regardless of your holdings against a raiser. The ideal raiser to do this against would be someone who isn't ridiculously loose (like calling off half his stack with QTs), who raises somewhat often, and raises small enough where your raise over the top will give him terrible odds.

First off... an earlier situation. Villain was semi-loose and raising fairly often. Here I understand he was forced to call (given greater than 3:1 odds) and showdown his K7o. I figure this call frustrated him.

PokerStars No-Limit Hold'em Tourney, Big Blind is t400 (3 handed)

Hero (t2575)
Button [Villain] (t9127)
SB (t1798)

Preflop: Hero is BB with , .
Button raises to t800, SB raises to t1773, 1 fold, Button calls t973.

Flop: (t3571) , , (2 players)

Turn: (t3571) (2 players)

River: (t3571) (2 players)

Final Pot: t3571

Results in white below:
Button has Kd 7h (one pair, fives).
SB has Qh Ad (one pair, fives).
Outcome: SB wins t3571.

-

This was a few hands later. Once again Button is the Villain. Of course I didn't push because I thought my 76s was a good hand. I pushed figuring there's a huge chance he'd fold and I'd pick up a sizeable pot. He would have to call off half his stack only being given 1.7:1 odds, and for all he knows I'm only playing premium hands.

PokerStars No-Limit Hold'em Tourney, Big Blind is t400 (3 handed)

Hero (t3250)
Button [Villain] (t6679)
SB (t3571)

Preflop: Hero is BB with , .
Button raises to t825, 1 fold, Hero raises to t3250, Button folds.

Final Pot: t4100

I know these examples were both ITM, but I've also went over the top against SB raises when 5 or 4-handed with crap given the right kind of raiser.

The key concept here... it takes a much stronger hand to call an all-in than to make an all-in. If you're given poor odds, you shouldn't calling with more than the top 10% of hands in most situations.