For me it is when companies/services market themselves as donating to XYZ cause if I buy their product. If they want to donate, they should have already done that with the money they have. Asking me to give them profit so that they can donate is so obviously pretentious.
All of them. Make "banning advertising" an election platform, I'll vote for you. Ban billboards and other forms of commercial advertising everywhere. Advertising works, nobody denies that. If you see enough ads, on average, your mind will be changed. By allowing advertising to exist, we are sanctioning widespread mind control. It sounds crazy when you say it that way, but it's true. Advertising does not benefit the average person, it makes them buy stuff they have no native desire for. Advertising only benefits advertising agencies and their clients.
Let word-of-mouth and genuine desire for a good or service drive purchases of that good or service, not advertising, and you'll end up with a more efficient economy where our consumer choices better invest in our shared prosperity and future.
Can you point to scientific literature that does prove this statement?