Just like to add another reason.
If the stacks are big[edit: deep], then often it's best to raise a lot, or not raise at all. But you can't be too obvious. Open raising 6x only with aces might make you predictable, and cause players to call with complete junk so they can bust your aces with 2 pair.
For the penny tables you'd be amazed how often players will call that all in with JJ or TT or QQ. heck, even AK will call sometimes. --- Him showing what he had was really dumb tho... I never show strong hands, and only rarely show bluffs.
Cheers,
Gutzz
PS. El Diablo posted a hand of his a few months ago where he raised 9x UTG (or was it UTG+1?). It didn't make any sense to me at the time, but he explained his reasoning in a response. Now I know, and knowing is half the battle
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