OkCupid.com is an international online dating, friendship, and social networking website that is free to use. It offers premium features like advanced search options, message filters, incognito mode, and some other features for a fee as well. OkCupid is famous for its use of math, quizzes and personality tests to find better matches. One can adjust their personal preferences at any time by indicating who they are looking for, their preferred age, family status and location, and why they joined the site. Note: the project is at the crowdfunding stage at the moment.