Shamu
Call me a pessimist but I always feel that a significant earthquake like the one in Japan tends to disturb mother nature breeding another quake somewhere else shortly after.
Japan moved 8 ft. during the quake. I just feel if they shifted the earth 8 feet there it may have disturbed the earth somewhere else and that spot, wherever it is, may then shift itself to get more comfortable resulting in more quakes.
Here is the list of the top 15 since 1900:
• Chile , 1960 05 22, 9.5 magnitude
• Prince William Sound, Alaska, 1964 9.2 magnitude
• Northern Sumatra, 2004 9.1 magnitude
• Kamchatka, 1952 9.0 magnitude
• Japan, 2011: 8.9 magnitude
• Chile, 2010 8.8 magnitude
• Ecuador, 1906 8.8 magnitude
• Alaska, 1965 8.7 magnitude
• Northern Sumatra, 2005 8.6 magnitude
• Assam and Tibet, 1950 8.6 magnitude
• Andreanof Islands, Alaska, 1957 8.6 magnitude
• Southern Sumatra, 2007 8.5 magnitude
• Banda Sea, Indonesia, 1938 8.5 magnitude
• Kamchatka, 1923 8.5 magnitude
• Chile and Argentina, 1922 8.5
notice that 5 of the 15, that is 1/3, have happened in only that last 7 years! Holy crap!