Charting the Course of Teaching and Learning in a Networked World
Glad to know the site is working well for you, however I would suggest you join a few other sites to get more clients. I would especially recommend a tutor-matching site like First Tutors: USA, as you get paid direct from your students, and thus earn more then what you get paid from a agency-style site like tutorz.com.
Seriously, all you tutors out there check out http://www.firsttutors.com/usa/! Takes just a few mins to sign up and definitely worth it!