There is lots of stuff that you can do to help the x0xd0x wiki grow, whether you are a seasoned electronics expert, or a beginning musician who wants to learn how to solder. There is something for everyone.
The various details in the SchematicOverview section need to be checked over, and fleshed out. You could also check out the Mods section, as they are in need of some work as well. You could also offer your words of wisdom in the Fabrication and Testing sections. The page VerifyMe has a list of all the pages that need serious help.
Share your experiences in the Fabrication and Testing sections. Chances are you found a few things that did, or didn't work, that would help out the rest of the world. Also, consider contributing your hints and tips on how you make your x0xb0x scream 'acid' to the Playing section.
The meta-wiki here is sorely lacking. There needs to be more information about how to use wikis and how to contribute to wikis. The community aspect of this wiki needs to be played up some more as well.
Right now the wiki is in dump-mode. Information is just getting dumped on to pages. There are spelling and grammar mistakes everywhere. If you are willing to spell check and fix some of the rougher paragraphs out there, go nuts.