Review My Site - Studylance.com
pedalpete: I really like the well designed site. 
Well laid out and easy to use.However, your paid model feels a lot like ExpertSexchange.com, a much loathed site, and it seems you are dealing in very small dollar amounts which means that managing the cost/payment process creates increased overhead and adds complexity to the system where it may not be needed, and the dollar amounts may not be high enough to be worth the extra headaches. (if an answer was worth $10-20 I'd be singing a different tune).There may be other revenue opportunities outside of advertising (though you're in the right market for lots of advertisers).