Just think about it, the only reason for your link being there is that you paid. And you think the search engines don´t know this? And if they do, do you think they give any value to that link?

The only reason that your link is higher or lower, ie BETTER RANKED in a bidding directory, is purely a financial one. So your are buying a link, and its position. Something that is surely so obvious that at some stage the search engines will just ban all sites running the known bidding directory scripts.

The owners of these directories are stating that they are noticably more porfitable directories to run, at least on a short term basis. But I have a clear general recommendation to site owners not to use these directories. I think there gonna get banned from the search engines and the site owners that have paid for there search engine influencing link will be out of pocket. So before you spend your money in a bidding directory think, is that a quality link your paying for your quality money?