Sharing videos, songs, e-mail messages, pictures, favorites lists, and profiles is becoming de rigueur in the 21st century. With online sites like YouTube, you can search for, watch and share video clips of just about everything -- no TV required. If you find a really great video clip on YouTube, you can post a link to it on your MySpace page. MySpace is one of the most popular Web sites in existence, operating as a networking tool for anyone who can type their name and think of a password. Members have profiles, links to other people's profiles, primary and extended networks, and can use their MySpace pages for fun, personal use, or to promote themselves in business and artistic endeavors.