There are two sides to every equation, - the person delegating the SP and the person buying the vote. Both want a maximum return, but both can't have it. Buying votes shouldn't be about making a profit. It should be about profiling the very best blogs. Unfortunately many people try to plaxce a bid on a profitable bot in the last few seconds before it bids. Too many people doing this results in over-bidding with negative ROI. Sorry that you lost money like this.