I have been watching the sites for a while. Prior to the Paso Robles quake, it had been pretty quiet for a year or two. A 'period of subsciendence' as Lucy Jones called it. She said that was scary.
Since then, there have been lots of little daily ones all up and down the coast, on all the usual faults.
http://www.data.scec.org/recenteqs.html
This is a great site.