I just now finished reading "Producing Open Source Software: How to Run a Successful Free Software Project". It was, in a word, excellent. Really, really good. And it's available in its entirety for free online.
I definitely learned a lot reading this book, despite having had a couple of years' experience helping to run FlexWiki now. I was happy to see that we already follow many of his recommedations, but I also know I'll be changing a few things we do based on what I read.
Even setting aside the fantastic advice about how to set up the technical infrastructure, I found Mr. Fogel's insight into the culture of free/open source to be truly insightful. It's no wonder that Subversion rocks so hard with guys like this behind it.
If you haven't already, read this book soon.