It’s been a busy few months for Facebook: a government investigation, another in a seemingly endless series of changes to the site’s privacy controls, a New Yorker profile of its famously publicity-shy founder and the upcoming release of The Social Network, a thoroughly unauthorized account of its early days. With all of the publicity and controversy around Facebook – not to mention its still-growing popularity – it’s almost impossible to remember what online life was like before it. In fact, it’s not much of an exaggeration to say that those who began using the Internet after the introduction of Facebook and its competitors do so in a way that is fundamentally different from older users.