Looks really useful. Question: What process do you use to ensure translation quality? I noticed I can sign up as a translator without any barriers.. are you only going to rely on feedback? What if someone gets angry that their translation was poor?
For now, anyone can get either get a refund with a click of a button, or repost the job to be worked on by another translator. Eventually, I'll be adding some safety checks to see that it isn't being abused.
Check out this German start-up: http://www.tolingo.com They have a bit of a head start but never mind. Crucial about their service is that 2 people work independently on each piece of customer copy.
How customers end up with one correct copy in the end, I have no idea, but this is part of their pitch and this is what customers are concerned about.
Also, your About page is an FAQ, but you need an 'About Us' page.
Great start -- not sure what about this took you 5 months -- now it's about execution and continuous improvements ;)