Facebook, Inc. is an American online social media and social networking service company based in Menlo Park, California. It was founded by Mark Zuckerberg, along with fellow Harvard College students. It is considered one of the Big Four technology companies along with Amazon, Apple, and Google. Facebook held its initial public offering (IPO) in February 2012, valuing the company at $104 billion, the largest valuation to date for a newly listed public company. Facebook claimed it had more than 2.3 billion monthly active users as of December 2018. However, it faces a big problem of fake accounts. It caught 3 billion fake accounts, but the ones it misses are the real problem. Facebook is one of the world's most valuable companies.