What customer demographic has 2++ hours to waste watching an auction trickle up one penny at a time, with up to 15 seconds between bids? Your business model may attract some VC funding, but your auction experience is boring and frustrating to everyone but the winner. You must redesign the bidding process to effectively shorten total auction times to less than an hour, If you don't you will continue to get a fair number of one time customers, a few supportive auction winners, but legions of frustrated detractors. As your site awareness grows your detractors base will grow much fast than your supporters base.