Life would have been different if YouTube had been introduced in the 1990s. Think of all the cat videos we could have been watching, instead of wasting our time on 'Seinfeld' and 'Friends'.

"You'll save all your favorite shows on a floppy disk." Um, yeah.

"Be a real critic, and leave your constructive criticism for the creator." Yes, YouTube's comments sections are riddled with constructive criticism.

And what would Facebook have looked like in the '90s? We have that answer for you too!