Seriously, how long does it take for sales people to realize you might not be interested in their product? How many calls do you not have to return? How many times do you have to say you're not interested? If there was any interest, it quickly vanishes if the sales folk are quick to annoy you. Even sales communication is an extension of your brand, and can influence a user's experience with your product. And sleazy sales tactics are the absolute worst thing you want associated with your product.
