Auctioneering; 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; Online auction services; Providing on-line trade directory services; Provision of an online marketplace for buyers and sellers of goods and services; On-line trading services in which users post requests for products and negotiate transactions via the Internet

Musical instruments

User authentication services using single sign-on technology for online software applications