So last night I was watching the discovery channel (Daily Planet) and near the end of the episode they had a little segment describing how the USGS (USGS Earthquake Hazards Program) is using Twitter to track earth quakes.
Apparently when recent earthquakes have happened, Tweets on Twitter spiked directly after an earthquake.
Here are two links on the subject of the USGS using Twitter to help track earthquakes:
USGS CoreCast: Shaking and Tweeting: The USGS Twitter Earthquake Detection Program
USGS uses Twitter to track earthquakes - 12/14/09 - San Francisco News - abc7news.com
...and once again, I retract my statements about Twitter being for Twits! It seems Twitter is getting stronger and stronger and being put to good use just as long as people don't spam it!