I have a few questions about Stack Overflow and how it works:

* How do intelligent programmers the world over find **time** to answer everybody's questions?
* What **incentive** do people have to answer questions? Reputation score? *(that can't even be converted to money, instead gives you more powers **so that** you can answer more questions better?)*
* Is it that helpful **guiding spirit** within all of us that powers this community?