One of the most poignant and moving websites around, its premise is simple. Complete strangers from all over the globe write their deepest secret on a postcard and the best, along with an image, are posted anonymously on this page every Sunday. Ranging from the upsetting to the hilarious and the down right disturbing, the images and words can make you laugh out loud one moment and then send you into deep thought the next.

PostSecret has displayed over 10,000 pieces of 'art' since its conception in 2005. Recent examples include 'I don't like wearing a bra�.for reasons a feminist would hate' and ' I don't tell anyone I used to be gay'. If you choose to visit just one site on this list, I would highly recommend you make it this one.