Arranging and conduction of auction sales; Auction management services provided to others over an on-line web site accessed through a global computer network; Business management assistance and particularly carrying out tasks necessary for the smooth conduct of sales by auction; On-line trading services in which seller posts products to be auctioned and bidding is done via the Internet; Online auction services; Providing a web site at which users can offer goods for sale and buy goods offered by others; Providing a web site that enables users to post items for sale through on-line classified advertisements; Providing a web site whereby buyers of goods or services locate and receive quotations from multiple competitive sources and sellers of goods or services identify and bid on multiple new sales opportunities; Providing information about automobiles for sale by means of the Internet; Providing space at a web site for the advertisement of the goods and services of others; Providing used car sales leads for others