First: A Katrina Timeline
Jane Hamsher at Firedoglake wrote For the Love of Cheney, two years ago, and now, For the Love of Cheney — The Second Anniversary Edition.
Author Poppy Z. Brite refused to leave the city, though she doesn't live in the same area anymore:
There's also a New Orleans community on livejournal.
And, of course, there's Digby: What, Me Worry?
Bush, Katrina, and the Shame of a Nation -- Two Years Later