Everything that works in sales has been done already. Just keep track of the crap that you buy, or the awesome stuff that you buy, and decide what was the trigger, and then just sell to people like you. It's really that easy - and that's what I do.
Many men of science and poets have in their own manner, by various ways and means, and aided by others, sought unceasingly to create a more tolerable world for everyone.
There is no point in asking a man a question until you have established whether he has any reason to lie to you.