If you've got a blog - TypePad, Movable Type, or otherwise, you can add a widget like the one you see in my sidebar to alert people about the latest hurricane information/how to get help/how to find family.
The information and widget come straight from FEMA/DHS, which is a huge improvement from the last time we went through all this.
I've done a quick scan of my friends in the Gulf, and everyone seems ok. I'm crossing my fingers still that the next three storms pass us all by with minimal damage. Hanna makes me feel a little nervous, so keep safe out there, yall.