This week's most popular Diggs: infinite loop, underwater river

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The most popular news, videos and images as picked by Digg users during the last seven days, recorded on May 4.

1. From a programming textbook - a glossary of programing terms where infinite loop refers to loop, infinite (which refers back to infinite loop) and the definition of recursive tells students to "see recursive. Hosted on

2. How Apple sells their products - a how-to sell products like Apple guide that explains it's all about making people want the missing features in the first generation so they buy the next-generation products too. Hosted on

3. A River...Underwater! - striking pictures of a hydrogen sulphide river flowing underwater hosted on

4. A t-shirt every kid needs to have - pictures of a kid in a long-sleeved dinosaur shirt that turns his arms into a mouth full of sharp teeth. Hosted on

5. My God, it even has a watermark.... - an image of the "perfect billboard" advertising a TV broadcast of American Psycho. Hosted on