I know it would be much easier to create the content once and simply teach it, but there are always new things I've learned that I like to add. Plus I really enjoy the workshops that have a lot of interaction, so I try different ways to get the points across in fun ways that people will remember. If you've never tried conducting a workshop of your own, why not give it a go. It's great to share your knowledge, help people, and get paid in the process:)
One of these days, I'm going to get my materials together and offer it as a manual for people who would like to teach Internet workshops but aren't sure where to start. Now that I've been doing them part-time for the last five or six years, I think I've learned a little as I've gone along. If you've taught some workshops yourself, please comment and tell us about your experiences.