It is useful to compare the pictures from Greece, as opposed to those from China. The Chinese earthquake was a monster 'super quake', and the Greek earthquake was a thousand times smaller.
Greece is very interesting because of the tectonics. That whole area is a zone of thin crust, which is being pulled like toffee. That results in beautiful islands which are essentially normal faulted blocks, which have fallen into the earth. A Greek island typically has one very steep side, and one with a smooth slope, indicating a tilted block.
Earthquakes happen all the time in area, but the overall strain rate is much less than the Himalayas, meaning that for any given spot, it might be hundreds of years between quakes, and these quakes don't spread the damage very far, because of the thin crust. That is why everybody merrily makes their houses out of rubble! The beautiful island of Santorini is a disaster waiting to happen!
Note the perfect slope of the tilted blocks!
The thin crust also gives rise to civilization-busting volcanoes!
ps. scratch that comment of a tilted block in the picture! This is ancient volcano and caldera country. I wish I could go and check it out!