The response from AGBourne says it all. Fantastic feedback!
In terms of getting more kids to tutor I would recommend a combination of online and offline marketing.
Online - Do you have the ability to do a video blog? You could grab a cheap flipcam and tape yourself teaching the way you would in person. Then promote this blog to as many educational portals as possible
Offline - Check out my friend Kevin at
Orangeville Math Tutor | Kitchener/Waterloo Math Tutor | Barrie Math Tutor | Mind Over Math - He has tried every form of offline marketing and built a very large tutoring business. I'm sure he would be happy to help if you email him