Originally Posted by baudib1
If you're a good player your goal is to keep the bubble going as long as possible.
Anything you can do to prevent someone else from realizing their equity in a pot is good.
I've been given grief from less-experienced players on several occasions about not checking down, but my goal in a tournament (or SnG) is not to accomplish collective knockouts - it is to accumulate chips and win. Players really hate it when they call an all-in and then you go over-the-top, forcing their fold but making your hand equity in that now inflated pot much higher.
I remember one of the poker books
referring to the concept as "hand-of'god" - you allow the shortstack to live on the bubble so you can accumulate a lot of chips collecting from the medium stacks, as they live in fear of being eliminated before the shortstack is eliminated. It's particularly effective in SnGs 4-handed, sitting as the chipleader.