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.

AlertSF is a emergency services network used to send out emergency alerts and "post-disaster" information via text-messaging from the City & County of San Francisco.

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.