2009, April 4, Jennifer 8. Lee, The Last Pullman Porters Are Sought for a Tribute, An 1890 article in The New York Times debated the ethics of tipping porters : “Tipping is objected to by austere and frugal American moralists upon the ground that it undermines the manhood and self-respect of the tippee.
2002, Oct 17, Tips on insider trading How an investor can avoid the problems, If tippees trade on the information, knowing it was given improperly, they, too, can be found guilty of insider trading, says attorney Jared Kopel