Modern Hobo Code
http://www.cockeyed.com/archive/hobo/modern_hobo.html

@jorgeortiz85: "For @jasonpjason: hobo code 2.0 http://bit.ly/isjrA (via @awans)" (from http://twitter.com/jorgeortiz85/status/2841001877)

also http://www.cockeyed.com/archive/candy_code/candy_code.html for Hallowe'en code for kids

***Modern Hobo Code The legendary "hobo code"was a set of covert markings used to warn other hobos about danger or to clue them into good situations. As times have changed, a new set of code symbols have emerged to alert other hobos to circumstances in modern America. Perhaps you have seen them on your own city streets.

The legendary "hobo code"was a set of covert markings used to warn other hobos about danger or to clue them into good situations. As times have changed, a new set of code symbols have emerged to alert other hobos to circumstances in modern America. Perhaps you have seen them on your own city streets.

No. 2: Used frying oil available for biodiessel. Might come in useful during the 2nd Great Depression.