MySQL is participating in Google Summer of Code 2009 (GSoC for short), and so is the MySQL documentation team. We've just put our ideas on this page; you might want to have a look if you're interested in applying for a GSoc project.
One of the projects is purely technical and doesn't involve writing any documentation, but rather improving the technique that goes on behind the scenery.
The other project does involve writing documentation, but it's mostly (if not exclusively) about creating examples for the Connectors & APIs chapter of the MySQL Reference Manual, so you don't have to be a Pulitzer award winner to contribute, but you should …
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