DON'T play in tournaments with re-buys! Re-buys usually don't go to the pot, but to the house. Re-buys were designed to make more money for the house. No other reason! And you know that you will throw more in if you lose. Also, it is total bullshit when you have to knock the same guy out three times to beat him.

If you do play in this kind of game, you should play pretty conservative up until the time that no one else can re-buy.