Group blog for 60m people

Just got a press release about this site, Ponder Fodder, or "PoFo," which seeks to promote "brainporn." I've signed up and appear to be user number 18, which is somewhat surprising to me. The press release states hamfistedly that "PoFo" sees an addressable market of 60m Americans who describe themselves as "intellectually curious," though there are undoubtedly others in the world who are both intellectually curious and not American. Anyway, I guess we can overlook a little unconscious jingoism in favor of what this might turn into. Is it an unlimited group blog, is it a Wiki, who exactly moderates it and on what criteria? All unanswered questions. I like the thematic, user-defined calendar idea.