I've been very happy with the site and client-draw. I'm a tutor who wanted to do just that: tutor. I was not in it for the money (still not) and my first client took MONTHS to come, but less than a year later, I have 4 steady pupils and I'm over 50 hours making 70% of my $55/hour rate. Between the four clients I do about 24 - 27 hours a month. It adds up quickly and the pressure goes away once you decide to do it for fun and to help others.
Now, for me, it's just easy, extra money.