Gerry Canavan – Incredibly diverse, if erratic, link dumps
Clusterfuck Nation – Updates every Monday like clockwork, but unfortunately the historically sharp-witted Jim Kunstler has started to sound a little grumpy old man.
Unplanned Atlanta
Strong Towns
Architecture Here & There – Great classical architecture blog
ATL Urbanist – Defunct blog, but still full of tons of great material
Peak Oil News
The Automatic Earth – Can be a bit wonky, but well-researched and interesting
Peak Prosperity – Far more upbeat than the titles suggests
Gin & Tacos – Politics and education humor