On-line auction services; On-line auction services featuring a wide variety of consumer goods in the fields of technology, science, science fiction, comic books, video games, computers, electronics, fantasy, collectible cards, board games, and table top games; Operating on-line marketplaces featuring a wide variety of consumer goods in the fields of technology, science, science fiction, comic books, video games, computers, electronics, fantasy, collectible cards, board games, and table top ga...