Plus, without a transponder in the aircraft, this app only identifies where the pilot is. That does not accomplish the goal of a transponder.

But it does give Google tons more personal and private information mined from crawling up yo' arse, and sold to the highest bidder (the last part is VERY true). Some people consider Google to be their friend. Some people consider Google to be pure evil and their sworn enemy.

It looks like a whole bunch of people would find that to be a neat app. Some people don't mind putting everything about themselves on the open market.