but they do more or less solve two out of the three criteria that, according to Dawkins, determine a meme’s success: longevity and copying-fidelity. Longevity of a meme in a digital network is in most cases guaranteed; a file may very well never be erased, and exist as long as the server exists that stores it. Then, copy-fidelity is guaranteed if a meme spreads by forwarding and reblogging a digital original.