HotorNot is a site where you can rate pictures of other people and see how others rate you. It's free to rate pictures and send messages (provided you have an approved photo). There's also paid memberships which grant extra privileges such as appearing higher in searches, and unrestricted messaging.
Hot or Not has been around for some time. It's simple format of rating photos is both fun and addictive. The site is much different than that of conventional online dating sites in that there are no extensive profiles to fill out. One merely needs to fill out a short form and upload a photo.
Public photos must be approved by the site's moderators. Photos will then be rated by other members on the website. You can start rating people on the site for free without registering - but only a limited a number before you are prompted to register. You simply click to rate pictures of hot women, or hot guys and after voting the official rating of the person appears in a box on the left. This is based on all of the votes collected.
A system in place requires mutual consent between members in order for any communication to occur. A basic membership allows one to send and receive unlimited matches and messages.
A paid monthly subscription allows one to navigate the site ad free site and also appear before free members in search results. Paid members also get access to other members' naughty photos.
The site is very popular and relies heavily on community participation. Hotornot.com was the brainchild of two entrepreneurs who have used the internet to launch a highly successful web dating service that is extremely affordable -- it is now owned by Avid Life Media, the same company that runs Ashley Madison.