Yeah, building a population of contributors is hard, as I'm discovering ( http://payload42.com http://payload42.com ). There might be some decent suggestions at

Yeah, building a population of contributors is hard, as I'm discovering ( http://payload42.com http://payload42.com ). There might be some decent suggestions at http://meta.stackexchange.com http://meta.stackexchange.com where folks are trying to figure out better ways to seed Q&A sites.