Here's a paper that Chip (who is a professor at Stanford University) and two of his colleagues wrote several years ago for the Journal of Personality and Social Psychology, titled Emotional Selection in Memes: The Case of Urban Legends.
A brief history of Internet Memes from the Trojan Room Coffee Pot, 1993 (They had memes then?
Insurgent Unleashes Teh Internets On Teh iPhone - Insurgent Games has just released teh internets - Attack of the Memes for the iPhone, filled with enough lolcats, lollerskates, and trolls to fill at least one forum topic. teh internets - Attack of the Memes is a shooter for the iPhone in which you navigate what is probably the closest you'll ever come to a graphical interpretation of your ...
"Memes" (e.g., ideas, rituals, tunes, cultural fads, etc.) can replicate and spread from brain to brain, and many of the same evolutionary principles that apply to genes apply to memes as well.
Memes work differently from genes, and digital information works differently from memes, but some general principles apply to them all.