One great way to have content created for you is with a blog, or a forum even.

Blogs and forums are ways to have your users interact with you. It's a way to keep in touch with them, and also make them feel like they are a part of the site, a part of a community. Great way to answer questions and dispel myths. A great way to show everyone how knowledgeable about your market and product you really are. Make yourself an expert.

These pages will eventually show up in the search engines as well. They are great content pages.