Helping his cause, Cheezburger just recently closed a $30 million funding round. But, what's a meme? Well, "Were you singing Rebecca Black's 'Friday' on repeat, or asking the towel-clad 'Old Spice Guy' questions on Twitter or Facebook? Remember the Double Rainbow dude?" asks CNNMoney.com. "If the answer is yes, you're familiar with a 'meme' -- a catchphrase (think of Charlie Sheen's #tigerblood) or a concept that becomes a byproduct of the Internet, spreading through e-mails, blogs and social networking sites." Says Know Your Meme editor Brad Kim: "We try to provide a coherent timeline on how these phenomena evolve and develop through conversation," says