I now bid very small sums (a few cents), its more like a lottery. It doesnt work on "multiply by x" system. It has a voting power and shares among bidders. If I send $0.10 and I am one of 15 bidders I can get a nice upvote. If there are 100 bidders, I get less. But certainly, sending much more money won't help you. It is not a multiplier system.