Thanks, this summary is a useful recap. I think a lot of this article is colored by the author's positive experience with his LivingSocial rep and negative exp

Thanks, this summary is a useful recap. I think a lot of this article is colored by the author's positive experience with his LivingSocial rep and negative experience with his Groupon rep, which may be just the reps he was working with. And, reading between the lines, it sounds like his impression of Groupon customers was created largely by one problem customer (could be a couple, but not many). Of course this tells you something, but to use an overused phrase it's "just one datapoint." It is, though, an interesting datapoint... I'm curious if this is truly a general trend.