Here's a short story:

Facebook is an American for-profit corporation and an online social media and social networking service based in Menlo Park, California. The Facebook website was launched on February 4, 2004, by Mark Zuckerberg, along with fellow Harvard College students and roommates, Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. 

The founders had initially limited the website's membership to Harvard students; however, later they expanded it to higher education institutions in the Boston area, the Ivy League schools, and Stanford University. Facebook gradually added support for students at various other universities, and eventually to high school students as well. Since 2006, anyone who claims to be at least 13 years old has been allowed to become a registered user of Facebook, though variations exist in the minimum age requirement, depending on applicable local laws. The Facebook name comes from the face book directories often given to United States university students. 

Facebook may be accessed by a large range of desktops, laptops, tablet computers, and smartphones over the Internet and mobile networks. After registering to use the site, users can create a user profile indicating their name, occupation, schools attended and so on. Users can add other users as "friends", exchange messages, post status updates and digital photos, share digital videos and links, use various software applications ("apps"), and receive notifications when others update their profiles or make posts. Additionally, users may join common-interest user groups organized by workplace, school, hobbies or other topics, and categorize their friends into lists such as "People From Work" or "Close Friends". In groups, editors can pin posts to top. Additionally, users can complain about or block unpleasant people. Because of the large volume of data that users submit to the service, Facebook has come under scrutiny for its privacy policies. Facebook makes most of its revenue from advertisements which appear onscreen, marketing access for its customers to its users and offering highly selective advertising opportunities. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Who were the only people on Facebook in the beginning?
Guess: Harvard students

Question: Were other Ivy League universities allowed in soon after?
Guess: yes

Question: What city's schools were also allowed on the site?
Guess: Boston

Question: What's the youngest age, theoretically, that's allowed there?
Guess: 13

Question: Who are face books presented to?
Guess: United States university students

Question: Can you log onto Facebook from a smartphone?
Guess: yes

Question: How about a tablet?
Guess: yes

Question: When you add other people on that platform, what are they then called?
Guess: "friends"

Question: Can they then send a large variety of media back and forth to each other?
Guess: yes

Question: Does the platform notify it's users when a friend updates their status?
Guess: yes

Question: What kind of member groups can users join?
Guess: common-interest groups

Question: Would a school's group count as one?
Guess: yes

Question: What's another category?
Guess: workplace groups

Question: Can members classify their friends and put them on separate lists?
Guess: yes

Question: How does Facebook earn money?
Guess: advertisements

Question: Is it a for-profit business?
Guess: yes

Now answer the following question in the same format.

Question: Where would you find their headquarters?

Menlo Park, California