From Plenty O' Twenties:
Need some extra cash? Now you can have the Plenty of Twenties web site in the palm of your hand. Actually it's even better, we have added a map to show you exactly where the $20s are. No longer will you need to sit by your computer mindlessly pressing refresh to see where the next $20 is hidden, you can sit anywhere and mindlessly press the refresh button on your iPhone, iPod, or iPad! Think of the possibilities! You can sit on the bus, on a train, on a horse, on a bench, on the beach, etc, etc. The possibilities are endless. Download it now and start collecting some $20s.Currently we are only hiding 20s around the Boston area but we have plans on expanding soon.