Zuckerberg, Moskovitz and some friends moved to Palo Alto, California in Silicon Valley where they leased a small house that served as an office.
Over the summer, Zuckerberg met Peter Thiel, who invested in the company. According to Zuckerberg, the group planned to return to Harvard, but eventually decided to remain in California.
Hasit explains: We had books called Face Books, which included the names and pictures of everyone who lived in the student dorms.
At first, he built a site and placed two pictures, or pictures of two males and two females.
A short time later, he created a different program he initially called Facemash that let students select the best looking person from a choice of photos.
According to Arie Hasit, Zuckerberg's roommate at the time, "he built the site for fun".
I remember really vividly, you know, having pizza with my friends a day or two after—I opened up the first version of Facebook at the time I thought, "You know, someone needs to build a service like this for the world." But I just never thought that we'd be the ones to help do it.
And I think a lot of what it comes down to is we just cared more.
Facebook expanded rapidly, reaching one billion users by 2012.
During this time, Zuckerberg became involved in various legal disputes brought by his friends and cofounders, who claimed they were due a share of the company based upon their involvement during its development phase.
They'd come over, draw stuff, and I'd build a game out of it." However, notes Vargas, Zuckerberg was not a typical "geek-klutz", as he later became captain of his prep school fencing team and earned a classics diploma.