Ads of the World is an online archive of the best and most interesting advertisements from across the world. Today I came across an advertisement on their site that uses four simple pictures to explain to you the difference between marketing, pr, advertising, and branding.
The site is a great source of inspiration and is useful if you want to see what kinds of advertisements are successful in various different markets. Click here for the original images and related discussion. The source link was also submitted to Digg and deserves to get some attention.