Hi there Wide
I've had a look at your website wearing my bookseller's hat and also from the perspective of someone who runs reading groups in secondary schools.
In principle, I think that your site is a good idea. However, by the time children reach their teenage years, they tend to want to select their own books, which is why I wonder whether your website would be best aimed at them instead of adults. I did, in places, find it confusing as to who you were addressing your recommends to - adults or teens. In either case, I do think the the website needs to be more teen friendly and a bit more visual than it currently is if you want teens to refer to it.
Just a picky point (and I know everyone has their own opinion on this,) but some of the books you have picked have been aimed at the wrong target audience. Morris Gleitzman for example wrote his 'Once' 'Then' and 'Now' trilogy for Key Stage 2 pupils (I've met him and he told me this(!)) Also, I would not have said that 'Divergent' is similar to Harry Potter or to Angie Sage. The latter are aimed at a much younger audience.
A good book to look at for research is 'The Ultimate Teen Book Guide.'
If you have someone with a bit of computer graphic savvy, it might be worth them taking a look at your site to jazz it up a bit. You could also see if you could post links to book trailers - they're an excellent way of drumming up interest in particular titles.
Hope my criticisms have been constructive rather than too negative.
MadameHooch x