1 million — End of 2004.
in February 4th 2004 Mark Zuckerberg had created facebook
Late in 2007, Facebook had 100,000 business pages, allowing companies to attract potential customers and tell about themselves. These started as group pages, but a new concept called company pages was planned.[
In October 2008, Facebook announced that it would set up its international headquarters in Dublin, Ireland.[
500 million — July 2010.
In 2010, Facebook began to invite users to become beta testers after passing a question-and-answer-based selection process, and a set of Facebook Engineering Puzzles where users would solve computational problems which gave them an opportunity to be hired by Facebook.[
As of February 2011, Facebook had become the largest online photo host, being cited by Facebook application and online photo aggregator Pixable as expecting to have 100 billion photos by summer 2011. As of October 2011, over 350 million users accessed Facebook through their mobile phones, accounting for 33% of all Facebook traffic.
On March 12, 2012, Yahoo! filed suit in a U.S. federal court against Facebook weeks before the scheduled Facebook initial public offering. In its court filing, Yahoo said that Facebook had infringed on ten of its patents covering advertising, privacy controls and social networking. Yahoo had threatened to sue Facebook a month before the filing, insisting that the social network license its patents. A spokesperson for Facebook issued a statement saying "We're disappointed that Yahoo, a long time business partner of Facebook and a company that has substantially benefited from its association with Facebook, has decided to resort to litigation". The lawsuit claims that Yahoo's patents cover basic social networking ideas such as customizing website users' experiences to their needs, adding that the patents cover ways of targeting ads to individual users.In 2012, Facebook App Center, an online mobile store, was rolled out. The store initially had 500 Facebook apps which were mostly games.
On April 24, 2014, Facebook and Storyful announced a new feature called FB Newswire.
On July 13, 2015, Facebook became the fastest company in the Standard & Poor's 500 Index to reach a market cap of $250 billion
more than 1.65 billion monthly active users as of March 31, 2016.