My cousin and his wife live near Christchurch. I haven't heard a word from him, although we are Facebook friends. My sister's and I are the closest family he has. Wouldn't you think he might let us know they are safe? I've been away for the weekend, I'll try to reach them tomorrow.
The worst affected town is Kaikoura hildajenniJ which is some way to the north of Christchurch. Its a well known tourist area for whale watching etc. Currently cut off due to landslides and massive damage to the highway. I don't think any indication that anyone in Christchurch is badly affected. My son says there is quite a lot of damage in Wellington centre. His building OK but he expressed concern for businesses in buildings that have been damaged.
DS2 phoned me when he was woken by the earthquake at midnight (he's in Wellington). He said it went on for a long time and was quite fierce. Everyone who works in the city was told to stay at home on Monday, but he works in the hospital, so went in with all the other staff. I've just been reading that there is a 30% chance of more quakes!