Where do all the Memes come from?

Really odd, I was just thinking about a posting about how it's almost impossible to keep on top of all the Memes in the tubes without hanging out at a certain amount of quality sites where all the "chatter" takes place around the shared content...and then someone goes and makes an interactive timeline of Memes that goes back to the birth of the internets...(it even includes the original inspirational "item" in question, or a story about it)...

So I won't bother then...! >;P