Everything's fine -- Mexico took some damage, and there's local kerfluffle like Disneyland shutting down the rides to check them over, but California's fine. I'm just worried about the folks down in Baja. I have a hunch the building codes may not be as strict down there.
Best comment so far on Twitter:
"RT @wilw: Apparently the #earthquake was upgraded to a 7.2, but I'm still seeing a 6.9 from the Russian judge. (kids, ask your parents.)"
Also, the comments on this picture are illuminating:
(Thumbnail is link to full photo. This house is in Mexicali, Baja)
I found it via Twitter. Two of the four comments are news reporters (CNN, AP) asking for permission to use the picture.
In other words, for breaking news, one often gets photos/videos on Twitter first; and the news stations scramble to catch up.