meisteg writes to tell us about Tubes: a beta application that uses a tube metaphor to enable users to share files over the Internet. The Windows-only app is free and the company hopes to make money on an enhanced version targeted at businesses. See this video for some details of how Tubes works. From the article: "[Alaska Sen. Ted Stevens] endured ridicule last year for his assertion that the Internet is 'a series of tubes.' But one Web startup hopes to bring that metaphor to life with a new service that makes it easy for people to share videos, songs, pictures and other big files."