No article sorry, it's just what the bandwidth display on my home router shows. I could post some screenshots but I don't care for answering to everyone who tries to debunk them. Mobile version of Facebook is by the way much better optimized than the full webpage. I guess desktop browser users are a small minority.
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.
