Christchurch Quake Map site developed by my workmate Paul Nicholls, shows, all the recent activity is happening on some faults out in Pegasus Bay. (This shot is just today's quakes, it would be far too cluttered if I'd selected all the recent shocks.)
Our house is not far from the current quake zone, but apart from pictures constantly needing straightening, we're not experiencing any bad effects. We were woken a few times during the night, and had power off between 6 and 8am today. That didn't really matter though, we knew that it would be back on in an hour or two (thanks, Orion!) so we just went back to sleep till 8.30am. Quakes of magnitude 5 or so trip out the local sub-stations as a safety precaution, and it's just a matter of waiting for the crews to get there and reset the trip switches.