A small courtesy coffee crusade is gaining momentum across the country as three more anonymous buyers opened their wallets and bought coffee for perfect strangers on Thursday.

The whole thing started on Monday, when a man walked into a Tim Hortons in Edmonton and ponied up for 500 cups of java for his fellow citizens to enjoy.

The gesture was copied by another man in Calgary on Wednesday at the Crowfoot Crossing Tim Hortons.

A regular of the restaurant stopped by at about 11:00 a.m. and also bought 500 cups of medium coffee for those who ordered after him.

On Thursday, a Red Deer Tim Hortons was the recipient of the courtesy coffee craze as another customer came in to pay it forward and purchased another 500 cups of coffee to share with customers.

The java kept flowing and spread east when a mystery man donated $860 dollars to the Tim Hortons at the Ottawa Trainyards.

The coffee buying frenzy came full circle by the end of the day when someone stopped into a second shop in Edmonton near the Royal Alexander Hospital and repeated the gesture.