Clinton book mania explodes on the Web By John Borland CNET News.com June 22, 2004, 3:13 PM PT Just hours after former U.S. president Bill Clinton finished a first round of book-signings for his new memoir, published Tuesday, autographed copies were selling on eBay for $250 and more. Some of those copies hadn't even been signed yet. One St. Paul, Minn., seller named Jason Gabbert, an eBay regular and longtime Clinton fan, promised that his family and he had tickets to next week's Los Angeles book signing and were guaranteed a few autographed copies to sell. "It's amazing the effect...