At last DebConf, with the help of Gregor, I've tried to summarize some BoF organization best practices in a sort of HOWTO.
As promised, although with 1 year of delay, we have just moved the DebConf BoF HOWTO to a more stable place on the DebConf wiki. In doing so, we have also integrated some of the feedback received last year.
If you've proposed a BoF at DebConf11, please take a minute to have a look at it and let us know your comments. As usual, your feedback and contributions to improve the text are more than welcome!