Yahoo! had some early success in attracting large numbers of auction participants in part because it offered its auction service to sellers at no charge. Yahoo! was less successful in attracting buyers, resulting in less bidding action in each auction than generally occurs on eBay. In January 2001, Yahoo! began charging sellers in the face of dropping ad revenues in its other Web operations., Within one month, Yahoo! lost about 80 percent of its auction listings; however, the percentage of listed items that ended in a sale increased six-fold, and the dollar amount of completed auctions remained constant. Because Yahoo! draws a large number of visitors every month, the company hoped that it would able to further increase participation in its auctions and attract some of the sellers who left in reaction to the fees. However, in 2005, Yahoo! reverted to its original policy of not charging fees to sellers. Despite its efforts Yahoo! was unable to draw enough buyers or sellers to its U.S. auction site and closed the operation in 2007