Whats your tournament strategy?

[Penguinfan]

Just got to thinking that I really only have a poker strategy and not a tournament strategy. Some of you may laugh, but I am starting to think that some of these bad beats could be avoided by not being in pots I don't need to be in.

Some questions I was just thinking about while playing a tournement:

Do you limp into pots to see cheap flops early or ALWAYS come in for a raise?

When do you adjust from limping to raising when you enter a pot?

When is AK worth all your chips and when do you much it pre-flop?

At what point are you really short stacked? I mean we all know your last 1000 chips with 300-600 blinds is short, but your getting called with that all-in bet. There has to be a point where you need to play like your short stacked when it really doesn't appear that you are. You gotta be willing to bust out with enough chips to steal blinds with or you up to the mercy of the cards, right?

Tons of other questions, but this is worth some thought and replies I would think.