One click bidding you don't enter an amount, you just click it and with no confirmation it automatically ups it to the next bid increment. You can click fast and enter a bid about every two seconds if you want. The danger is if someone pops a $30 increase, you click one click and it goes up to the next level above that. It's for those who want to snipe at the very end and win it at whatever cost, but just one increment higher.

Dave.