However earthquake prediction methods are not very accurate and hence sometimes they generate false positives too. (http://en.wikipedia.org/wiki/Earthquake_prediction)

Take a look at this: http://quake.usgs.gov/recenteqs/Maps/Los_Angeles.html

This clearly shows that earthquakes of small magnitude keep happening almost all the time. We can either be paranoid about it or be prepared and keep our cool. Wikipedia has information on safety measures for earthquake prone geographies - http://en.wikipedia.org/wiki/Household_seismic_safety.