Bay Area hackers: be prepared for the inevitable earthquake
pubs.usgs.gov
pubs.usgs.gov
However, I was listening to a podcast of Mark and Mary Lou Zoback (the cheerful geologists of doom) giving a lecture at Stanford, and I was suddenly reminded that I know a lot of friends, colleagues, and websites that still live in the Bay Area, and it would be a terrible shame to lose any of them to collapsing bookshelves, cheap apartments, lack of fresh water, or week-long communication outages.
(You can find the podcasted lecture on the Stanford section of the iTunes store for free, if you search hard enough; a writeup of it is here: http://daily.stanford.edu/article/2006/4/17/quakeCentennialT... )