I checked into my office on Foursquare the other day and I got a message showing there was a special offer. I thought, that’s odd, I didn’t create a special offer. When I clicked on the offer is was a special from American Express telling me that if I used my American Express card to [...]

Last Friday, I was one of the crazy people. I woke up early and trekked over to the Mall of America. Not to shop–but to work, and observe. In case you didn’t hear the Mall organized a fairly large Black Friday event centered squarely around QR codes.