Many people appreciate the benefits of bid directories and the ability to control listing position in categories, increase exposure with homepage placement, etc.  However, there are a lot of people who think of them exactly like other directories and pay the exact minimum bid amount for the listing, just for the category placement, and that’s a perfectly fine approach, depending on the directory and site being promoted.  Here’s a tip for those who take this direction, though.  Instead of bidding the exact minimum amount, consider bidding $1 or even $0.05 more than the minimum amount.  The reason for this is because everyone else who has this same idea also bids the minimum amount, and if they bid before you, their listing will be shown above yours.  $1 can make the difference between a page 2 listing and a page 6 listing in many cases, and certainly page 2 is considerably more beneficial than page 6 in every way.