I've been always against those who vote only the songs they like (or the songs they're trying to sabotage  ).  I think we should also vote for the songs we don't think are good.  So, why should a "bad" song have 70%? anyway, that would be exactly the same as it is now, becose:  70% = 10%.  If I want to sabotage a song, I rate it 70%, or just don't rate it...

Plus, we need people to vote, not to stop voting...