I think this was a really interesting talk (because of all the contributors talking), and my only minor complaint was that it was up against some really good talks, and we didn’t get more people showing up to a talk that was very largely on the great Architecture of Participation. It also is interesting, as it goes to show that blogging can get you good rewards - most of everyone listed below, is a somewhat active blogger.
Martin Friebe - bug reports, patches
Why? Its just cool to contribute. Improves your knowledge. MySQL rewards you (named on the website, Enterprise, etc.).
How? Write code. Look …