
This book guides its readers through the theory and practice of helping a community (with a focus on open source software communities) to achieve its goals. This advice is distilled from Jono Bacon's personal experiences with founding and building the LugRadio podcast / community / live events, the Jokosher audio editor project, and of course his current role as the Ubuntu Community Manager, with plenty of personal anecdotes that provide the rationale for his suggestions.
Or Jono Bacon's book "The Art of Community" is also good.
One thing you may find, sadly, is that with SOO many projects out there, yours might not get a lot of fellow developers.
But this sounds like a wonderful idea for a project!
"Building Successful Online Communities", by Kraut & Resnik
I'd love to hear more about your plans to build a community around the boards now. I'm working on building a community around a yet unreleased but announced open source project myself (http://famo.us/) and I'm in the early stages of planning everything.
Check out The Art of Community by Jono Bacon, the guy who was responsible for the Ubuntu community. That book has a lot of good stuff.