Watch out eBay: there’s a new Web auction in town. Rockybid.com launched its unique online auction service earlier this week. This auction service has a business plan that’s like no other auction service we’ve seen to date. In traditional auction fashion, Rockybid starts auctions with a set price (in this case, $0) and sets a time limit for the auction. The auction site differs from eBay and other popular auction outlets in that it adds 15 seconds to the auction countdown clock each time a bid is placed. In