I am a subscriber to and avid reader of Google blog - since I use so many of their features. They have more than 485, 000 readers so I am sure many of you would have read this, but I thought I would share anyways.
This post at the google blog mentions the website of US Geological Survey where you can check all the earthquakes that happened in last 7 days.
You can look not just for US but for other parts of the world as well.
As I looked at data for last 7 days, I was amazed to find the large number of + 5 Richter earthquakes.