I see a significance in that Herbalife, Groupon, and LikeAlittle seem to be selling sales vs. other businesses using salesmanship as a medium. It's a fine line

I see a significance in that Herbalife, Groupon, and LikeAlittle seem to be selling sales vs. other businesses using salesmanship as a medium. It's a fine line, but a distinct one nonetheless. Does anyone have examples of similar businesses to the aforementioned? Curious how much of a trend this actually is.