Voting your own content is not the problem. ( if you think it's good content, anyways :P )
Before hardfork 18, I was upvoting my own content all the time, but my single vote was only worth 0.01 $ and only if a lot of others voted for the same post, would it generate a good payout.
Changing back to n^2, would make this page much more 'social' again.