The supermarket collecting info for marketers doesn't bother me at all. (Sorry for tangent/off-topic) What bother me is how Coke small sizes the 2L bottles to 1.5L (easier to handle, blah blah blah), lowers the price initially so we don't think we're being had, and then brings the price back up so we're paying the same for 25% less. Frito-Lay (not that I buy their products) does that all the time with their chips but the changes are so slight at a time that people don't notice (I was actually taught this by a FritoLay marketer). Bastards...