fastr

fastr is a very cool game, not unlike Guess-the-google. It shows you 10 images (from flickr) that have a common tag. You’re supposed to guess the tag before all 10 images appear. The faster you guess the tag, the more points you get.

The nice thing about this game is that it is round-based (all online users of the game play at the same time) so you can see how other users are doing with the same challenges and compete with them.

“Where’s George” helps to model the spread of infectious disease

The website Where’s George lets people enter their dollar bills and see where bills have traveled. I always thought it was an interesting idea. For example, check out this example of a dollar bill trace. You can even see a map where the bill has been.

Lately, however, a surprising use was found for Where’s George. From this article: “…scientists have unveiled statistical laws of human travel in the United States, and developed a mathematical description that can be used to model the spread of infectious disease in this country.”

(via Slashdot)