A Review Website

What I am looking for is a website to be made which will enable me to send my customers to who will be able to leave a review for my website, products etc. that they have bought enabling me to convince future customers that I am a trust worthy seller and my products are good. What I am looking for is a site where a customer will have to register and then be able to leave a review for me. I will also have to register with the site. The customer should not be able to leave a review if One of my sites have not been registered.