Web Health Warning Put All Destructive Actions Behind a POST Request

—From Agile Web Development with Rails, Dave Thomas, David Heinemeier Hansson, et. al

Later, we discover that David H and his 37signals cohorts fail to follow this sage imperative but want to blame the world rather than admitting that DHH's main contribution to Agile Web Development was his name.

Google's Accelerator in need of a recall

Google Web Accelerator: Hey, not so fast - an alert for web app designers

Maybe this should be required reading for everyone at 37signals.