Submission + - Conferences - Are Smaller Better? (everythingsysadmin.com) 2
The solution he has in mind are regional conferences devoted to specific topics. He's going to be speaking at the NJ-based PICC'11, but even long-running events like PAX started as a small conference meant to build community.
Having a small group of organizers dedicated to building a local community seems to be more economical for everyone involved, and leads to events where everyone can take a bigger part in the process."