It sounds as though it's a good idea. However, I'm wary of spreading myself too thin. In addition to Hubpages I'm also writing on a couple of other web pages (you have to be diversified), and I don't know if I could work another article-writing site into my rotation. Especially with their requirement of 30 articles in the first 90 days. Also, there's no indication of what you can make. I mean, I'd like to have some idea of what to expect.