Might want to not go looking for cars that are parked a little wrong, specially at large stores. See if one person parks wrong, it throws off the whole lot line. So if one dude parked bad, then the guy next to him is off. So if the first guy leaves, it makes the second guy look bad, even though he did nothing wrong.
Sure there is bad parking, but those people have to over the top bad. diagonal and extremely double parked. Want to see some really terrible parkings? Drive up to a university.