Once a person has decided to register at Match.Com, the biggest meeting website in the world, she/he will register also her blood type. In the first week, a letter with a registration kit will be sent to the new customer. After registering, the user gets three months of subscription for free. If they convince a friend to also subscribe and register as a donator, they both get three more months for free. More people with a match, more patients receiving bone marrow donations and more happy couples. The perfect match is done!