SFGate - Big-quake activity not unusual, scientists say
The San Francisco Chronicle reports: "First Haiti, then Chile, Mexico and now China - all pummeled by major earthquakes in just over three months. As a seemingly steady stream of devastating scenes play across television screens, computer monitors and newspapers pages, many wonder if earthquakes are suddenly becoming more common. The answer, according to the U.S. Geological Survey, is no."

Comment: Thanks USGS, please let us know when the situation changes.