Facemash is a website that was created by Mark Zuckerberg during his time at Harvard University. He created the website in one evening, whilst drunk, after his girlfriend Erica Albright broke up with him.

The website used pictures of female Harvard University students which he stole from the student directories via hacking. The website compairs the female students against each other using coding, written by Mark and a formal provided by Eduardo Saverin.

When the site was finished Mark sent out a link to a few people who sent it out to other, resulting in hundreds of visitors. The website gained so many visitors during its short lifespan that it crash the computer system.