Figured I'd start a thread for any AdMob questions... and start it with one of my own!
Where exactly can I find my Device ID?
Answered by Stephen: Your test device ID is displayed in DDMS when you run an ad-enabled application. Look for the line that says something like: "To get test ads on this device, call adRequest.addTestDevice("8848448sadsfa8ad8f8fda")"

