Oh, how you've changed, Mark Zuckerberg.

Over the years, the head of Facebook has shaken up his site with various redesigns. Sometimes, it was little things, like being able to "Poke" people or displaying user activity on a "Mini-Feed." And sometimes, it was a big change, like the 2011 introduction of Timeline, which allowed users to post "Life Events" and add large cover photos.

What better way to reminisce on all of Facebook's changes than to look at Zuckerberg's own profile evolution?

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Throughout it all, he's been a chameleon, tweaking and transforming his page to highlight any and all of Facebook's new features. Here's a walk down memory lane with the many faces of Mark Zuckerberg's profile.