Arranging and conducting trade shows in the field of hobbies and collectibles; Auction management services provided to others over an on-line web site accessed through a global computer network; Auctioning via telecommunication networks; On-line auction services; On-line auctioneering services via the Internet; On-line trading services in which seller posts products to be auctioned and bidding is done via the Internet; Operating on-line marketplaces for sellers of goods and/or services; Organisation of internet auctions; Promoting the goods and services of others by providing hypertext links to the web sites of others; Providing a searchable online advertising guide featuring the goods and services of online vendors; Providing a website featuring an online marketplace for exchanging goods and services with other users; Providing a website for connecting sellers with buyers; Providing on-line auction services