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  Mark Zuckerberg releases "Facemash", described as a early version of "Hot or not".
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  Zuckerberg launches Facebook at Hardvard.
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  Peter Thiel invests US$500,000 in Facebook.
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  Facebook gets its one millionth user.
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  Facebook opens it servers up to more schools internationally.
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  Facebook opens up to highschools as well as colleges.
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  Facebook incorporates "News Feed" a new feature that keeps a simple feed up to date with current news.
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  Facebook now opens to anyone over 13 and with a valid email address.
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  Facebook sets up International HQ in Dublin, Ireland.
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  Facebook intergrates a new feature called "Community" in which Facebook users get added to a group and can share posts within that group.
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  Facebook Zero launches, a way of accessing Facebook without data charges through certain networks.
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  Facebook partners with Skype to bring users video calls and seamless IM
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  Facebook Messenger launches for both Android and IOS phones.
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  Facebook intergrates ads that appear in peoples news feeds.
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  Facebook buys Instagram for a total of 1 billion US dollars.
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  Facebook opens its shares to anyone who wants to invest. This values Facebook at $104 billion US dollars.
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  Facebook reaches a total of 1 billion active users.
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  Facebook starts a foundation called internet.org giving people in poor countries access to internet services.
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  Facebook celebrates its 10 year anniversary.
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  Facebook reaches 1 Billion users online at the same time.