Gonna post this here as it also goes in with the topic of stupidity, but this was on the help forums for endomondo, an iphone app that uses gps to track how far you have run...
"I set the settings correctly and gps was on. I had it strapped to my arm. I was walking on the treadmill and holding onto the handles, which could be why it didn't work. When I was fininshed the distance and the calories did not come close to what the machine had registered. What am I doing wrong?"