icanhascheezeburger www.icanhascheezburger.com

The biggest and best lolcat site, it has links to many hilarious sister sites where the emphasis is on either hilarity or cuteness - often both. These sites feature cats, people and other creatures being silly or adorable. People are encouraged to make and post their own "lols."

Personally, I'm addicted. It's a good enough reason to procrastinate - many hours that could otherwise be spent productively can be wasted laughing your socks off at the funny stuff or going "Aww!" at the cuteness. While I'm sure the products for sale there (Invisible Bike T-shirt, anyone?), I have yet to purchase anything from the site shop. Thus far, I've been getting my pleasures for free.