On-line bartering services; providing an on-line searchable computer database for the procurement of the goods and services of others in the field of antiques, art, automotive parts and accessories, books, clothing and accessories, collectibles, computers, consumer electronics, home and garden accessories and products, jewelry, watches, movies, music, photography, sports memorabilia, sporting goods, and other miscellaneous goods and services desired by others; on-line computer services, namel...