I have a flu since a couple of days and when I initially woke up and suffered from it I tweeted about it. At nearly the same time I saw that hacker friends of mine tweeted about their flu in USA, Germany and Singapore.

I thought it would be cool to be able to search for any keyword on Twitter and see an animation that shows how the topic spreads over the world over time.

• User sees a Google Maps Worldmap
• User enters any Twitter keyword (i.e. "Flu")
• User sets any timespan (i.e. 2 weeks ago until now)
• Map jumps from day to day (or hour to hour) and the colors of the countries change (green = just a few Tweets [...] red = really lots of tweets)

This is probably not exactly trivial... but i'm sure people would love to see the flu spreading all over the planet (or Justin Bieber)