Welcome to This Is Good, a new recommendation column for SFist about things that are good.
If something is good, we'll tell you. Simple as that.
* http://AlertSF.org Is Good.
Pretty nifty idea. Doesn't really help in terms of an earthquake -- unless you're on a bus or in a car and can't feel it -- but conceivably, AlertSF could save lives if there was a tsunami headed for our shore or if something terrorist-ish went down.