Bloomberg :: Twitter, the microblogging service that lets more than 140 million users send short messages on everything from the mundane to the life-altering, tipped off the U.S. Geological Survey to the 7.6-magnitude earthquake that hit near the coast of the Philippines.
A report by Douglas MacMillan, www.bloomberg.com
Earthquake information system: Tweet Earthquake Dispatch, earthquake.usgs.gov
Earthquakes worldwide USGS Real-time earthquake map
The USGS is offering earthquake alerts via two twitter accounts: