I've also noticed signs that lots of folks pay no attention to... such as:

"No Spitting On The Sidewalk", "Post No Bills", "Speed Limit 25", "Cross In The Crosswalks", "No Turn On Red", "Don't Feed The Animals", "No Smoking", "No Diving In Pool", "Do Not Take Any Food From The Buffet", "No Dogs Allowed", "Reserved Parking", "No Stopping or Standing", "Do Not Litter", "No Slabs Permitted", etc. (just kidding about the slab sign. I wanted to see how many read this far)

BTW: I've never seen nor heard of anyone busted for taking roulette chips. Maybe it's not that big a deal that some like to make of it.