The long term approach that is required keeps down the spammers from joining as they are looking for quick hit returns and may not keep an account more then a few weeks so no ROI for them. That is a good thing, F spammers.

Think with the increase in voting power everyone is seeing right now it might be a little less then the 115 posts to break even, but either way it takes some time. But it's instant ROI for contest winners!