"He said to ask about a time when they'd hacked something to their advantage—hacked in the sense of beating the system, not breaking into computers. It has become one of the questions we pay most attention to when judging applications."
The part about "make tons of money" isn't there, but I don't think anyone disagrees with that part -- YC recently launched a separate branch to handle nonprofit ventures.
> Since some people were confused when we funded Watsi, I’d better clarify that the money we’re putting into the nonprofits will be a charitable donation, rather than an investment in the narrow sense. We won’t have any financial interest in them.