I'm not sure if requiring people to post to be able to vote is such a good idea; some people either don't want to post (and just lurk, but still contribute by voting) or there's nothing for them to post about, so they'd end up posting rubbish just to get their votes (for example, I didn't post for three or four months after registering for both these reasons.) Also, I think this might be fairly easy to get round, by just preparing a set of "generic" posts that could be used (maybe pulling random old nodes from SOPW that everyone's forgotten about and altering them slightly?).