It seems like a scam to me. Everytime there's a new bid the timer resets to 30 seconds or 15 seconds. There could be no end to bidding since the auction never expires.
That's explained in the instructions, though. If a bid comes in within the last 20 seconds, they will extend the auction by a few seconds. A counter to the eBay sniping, I suppose.
I can't say if it's a scam, but I won't be doing it (well, until others here do
). I bet they are making money, though. Last night, they had a Wii auction that was ending. The price was around $30, but since every bid only increases the price by $0.15 and costs $0.75 to do, that's not bad. Plus, everyone kept increasing the bid at the end - probably thinking, "I can get it for $35...I can get it", along with everyone else. I stopped watching, but there's no question that the place made more than $250 for that $250 Wii.