The Postcrossing Project allows users to exchange postcards around the world by requesting addresses on their website, mailing a postcard to that address, and then waiting to receive a postcard in return which they then register on the site before requesting another address to continue the cycle. The site provides profiles for users, galleries of postcards exchanged, maps of where postcards have been sent, community features, and statistics on the social impact and growth of users exchanging postcards each month through the project.