First of the concept of your website is absolutely great, awesome idea.
When I came to use it, however, the design of the site looks-wise is just a bit of an eyesore with the google ads in the header and the blurry background images.
Probably just me being picky to be honest, but that's my suggestion to bring the design up to date.
As I said before though, the functionality etc. is faultless, great job.
Thanks for your feedback.
I’d love to do a redesign, however time constraints make it very difficult to do so.
I’m not saying it’s a no, just that I can offer more elsewhere on the site with the time I have available.
Andrew Woods commented
I second this. I'm sure you've got some developer friends who'd be happy to help out ;o)
James Prince commented
Ah no problem, if it was my site I would probably say exactly the same, functionality comes first! :-)