[Capricorn2481]

Well Facebook has video on it. Highly unlikely that a static site is going to even approach watching a video.

[oriolid]

Did you actually look?

Typical websites are not static and include a huge amount of JavaScript and other stuff from different ad networks, analysis tools, etc. It looks like most of it isn't cached. Video delivery on the other hand is incredibly well optimized because everyone knows it's data intensive.

[hxorr]

It may surprise you how heavy Facebook is these days