Android Development Tip - adb Finds No Devices

I am busily working on an article about developing AIR for Android following the instructions from this excellent video tutorial by Lee Brimelow. However, when I connected my Nexus One and ran the ./adb devices command from the Console, it returned me an empty list of items. It turned out to be a very simple problem. I simply needed to enable USB debugging on my device. This setting was found at Settings > Applications > Development > USB debugging on my Android phone. It seems that by default this setting is turned off (which makes sense really since few people really need it). Once I turned this on, running ./adb devices returned the connected device and I could continue developing and publishing to the device.