Geekdom comes in various forms - in my case both fandom and the computer world.

Over in fandom there's a targeted effort by fans to provide housing and assistance to the fans affected by Katrina, including having noted authors Mercedes Lackey and Larry Dixon offering up their home and time to host people and to coordinate others willing to host people or donate food, time or money. My wife's blog has more details and links - so if you are a fan here's a great way to help!

And in the computer world there's the Katrina Data Project, which I blogged about a couple days ago. Computer geeks of the world have similarly generously volunteered their time and resources to make this work as well. Here's part of an email from the project, along with contact info if you want to get involved as well:

Some quick data on what we've accomplish so far: