Video is a great way to promote yourself and your work on MySpace. People respond more when they can associate a face and a voice with the words.
Lots of new companies have popped up recently to provide authors with video content to promote their books. If you don't have the resources to hire a video producer, it's fairly easy to create your own video. A simple question-and-answer session can provide video content to publicize your book. Position yourself in a chair in front of a bookshelf or potted plant and have a friend ask a series of questions about you, your book, who it's written for, and why you wrote it. If you're on a budget but aren't able to shoot your own video, solicit volunteer film students from a local college. Students are usually willing to work on such projects, which provide experience and something to show on their resumes.