Take a Look At My Site - Studylance.com
pospischil: I definitely like the concept.  My hang up is -- how is this different than mahalo answers?  (more focused, sure, but the mahalo folks could answer these questions, no?)  Doing something to verify the tutor's expertise might help with this (could be simple quizzes or something).Another general note -- as a tutor, I'd like some assurance that I will get paid for answering the question.  This may lead to less questions, but significantly more answers.  This obviously introduces quite a bit of complexity for the poster, but I think its necessary.  You could potentially start people with a few pounds in their account that you finance to get things rolling (or, give people a few pounds when they sign up and add a credit card).Next -- visual design -- I was impressed with your design, there are some nit-picky things to tweak, but overall it is visually appealing.
-In safari, the sign in/register links at the top have the descender part of the g gets cut off (probably because the containing div is too short).
-The font color in the "Post My Question", "View All Questions", "Answer Question/Make Bid", etc is a bit difficult to read.  This one nags at me quite a bit because it makes the buttons look pixelated or something -- i'd fix this up right away.
-Really like the visual representation of description of service -> ask a question call to action.  looks great/leads the eye the way you want it to!As others mentioned -- the about us could use some copy.  Don't want to spend too much time on it, but it adds a lot of credibility (or rather, it takes a lot a way to see 1 line of text there).I have to run here in a second, but one last thing -- you might want to think about requiring signup AFTER someone has answered the question (as you do with the asking of a question).  Once someone has spent time answering a question  they are more likely to sign up.Wish I had some more time, but the site looks good, keep up the great work!Good luck!