Agreed, but I wonder how many companies would educate people on these tricks? Would it give any company any advantage or benefit? And what if a large charity uses these tricks in their fund raising schemes? In the UK for example we have a number of street "chuggers" (charity muggers) who use a range of bad tactics on the street and doorstep. Legally they are allowed to get away with their bad behaviour because so many people support the charity in normal ways.