I didn't bother to read what's behind the curtain, but assume it is at least a simple database matching and at best a very sophisticated one. Lots of applications into all kinds of intelligent activity tracking.
Tropicana's disaster repackage of their orange juice from this year is a pretty good story if you haven't seen it. Sales plunged 20% in first 6 weeks. Beth stopped buying in protest.
Shows importance of packaging, even though I think things are generally over packaged. Besides making the product look like a generic, something that is missing in a lot of discussions of the problem, is a comment Beth made that they also made all their different versions (no pulp, extra pulp, etc) look the same, so even if you found Tropicana, you couldn't find the specific one you wanted.
Below are some good posts. By the way, the package change they made when they went back to the old look, with the little orange shaped cap, is pretty nice.
I'm not an economist, but this Youtube video is pretty funny, especially how strongly people argued with him has he said financials are toxic and housing was over done.