This is very interesting. Are you considering doing it yelp/groupon style, with a representative in each city? I'd be willing to be my local (san diego) rep, as I'm looking into getting more involved in my local dev community (and this seems like a great way to do that)
Sorry, meant to add: if you're interested in discussing something like this, please contact me via the email in my profile. Thanks!
Some integration with meetup would work well too, I would think - it already has an established audience of local developers in specific languages.