Box.net is a great new site that let’s you store files online. An account with 1 gigabyte of storage is free. The free account let’s you share files with other box.net members, or upgrade to a paid account and share files with anyone via a public link (which can be password protected). The interface is very slick and easy to use, and upload/download speeds seem to be good. With a box.net account, you may even be able to retire that old USB key.