Zuckerberg launches Facebook as a Harvard-only social network.
Facebook receives its first investment from Peter Thiel for US$500,000
Facebook launches its photos feature with no restrictions on storage (but without the ability to tag friends)
Facebook launches News Feed. The original news feed is an algorithmically generated and constantly refreshing summary of updates about the activities of one's friends. The concept is relatively new at the time, with Twitter having launched only a few months in advance.
Facebook launches Facebook Beacon with 44 partner sites at the time of launch. Beacon is part of Facebook's advertisement system that sent data from external websites to Facebook, for the purpose of allowing targeted advertisements and allowing users to share their activities with their friends. Certain activities on partner sites were published to a user's News Feed. On the Same day, Facebook launches Facebook Pages
Facebook settles both lawsuits, ConnectU vs Facebook, Mark Zuckerberg et al. and intellectual property theft, Wayne Chang et al. over The Winklevoss Chang Group's Social Butterfly project. The settlement effectively had Facebook acquiring ConnectU for $20 million in cash and over $1.2 million in shares, valued at $45 million based on $15 billion company valuation
Facebook announces a feature whereby people can @-tag friends in their status updates and comments
The Social Network, a film about the beginnings of Facebook directed by David Fincher is released. The film is met with widespread critical acclaim as well as commercial success; however, Mark Zuckerberg says that the film is a largely inaccurate account of what happened
On January 30, Facebook announces Facebook Paper , a separate iOS app that provides a newspaper-like or magazine-like experience for reading on the phone, scheduled for launch on February 3. Facebook also announces Facebook Creative Labs, an intra-company effort to have separate teams working on separate mobile apps that specialize in different facets related to the Facebook experience, rather than trying to make changes to Facebook's main web version, mobile version, or its iOS and Android apps, and says that Facebook Paper is the first product of Facebook Creative Labs. Facebook Paper receives mixed reviews, and some commentators note its similarity with Flipboard
Facebook releases its React native framework for building native apps as open source. This is announced on the second day of the F8 conference.
Facebook announces that it has hit the milestone of 1 billion users accessing it on a single day