How about imposing a small karma penalty to post a new story? Then, set a minimum karma requirement for posters. The karma requirement could be positive or neg

How about imposing a small karma penalty to post a new story? Then, set a minimum karma requirement for posters. The karma requirement could be positive or negative. It would eliminate spammers and reduce bad stories in one fell swoop. I noticed a couple users tend to post a large number of stories which generate no discussion and earn no points, but there's no loss to the user and no prevention mechanism.