Found a link somewhere to
this article in the Atlantic, which talks about data mining of all your trackable purchases so that marketing snipers can offer you customized spam (which theoretically makes it more likely that you'll purchase).
I read a few months ago about some credit card company exec admitting that he doesn't use a credit card when buying fast food, I think due to the possibility that in the future, insurance companies will have access to this information and could customize your premiums or health care coverage based on purchase behavior. I'll add a link if I can find that article. For most mustachians, this might mean lower health care premiums than people who eat out all the time, I guess.
I do my discretionary spending (personal fun money) in cash for budgeting purposes, but I've also found myself generally leery of using credit cards for certain things. Anyone else changed behavior due to this tracking, or have any other insight on potential benefits/dangers of this type of tracking for mustachians?
I also seem to remember a Calvin & Hobbes strip in which Calvin's Dad buys a book with cash to avoid tracking... but I can't find it. If anyone does, please share!!