What was the original name of Facebook when it launched at Harvard?

Facebook originally launched at Harvard under the name TheFacebook. Mark Zuckerberg launched the site on February 4, 2004, at the domain thefacebook.com, initially limiting membership to Harvard students.

The name referred to a “face book,” a student directory containing photographs and basic information. Harvard students were familiar with printed directories and private online versions, and the new site aimed to make that social directory easier to search and use.

The project spread rapidly beyond Harvard, reaching other universities during 2004. After Sean Parker became involved as company president, the business moved to Palo Alto. In 2005, the company purchased the Facebook.com domain and removed “The” from its name. “FaceBook” is therefore a capitalization error, while “The Face,” “MyFace,” and “TheFacebook” are not interchangeable in this question: TheFacebook was the original branded name.