Comment by M_Grey

Optical illusions are neat, but I don't think it rises to the level of a "hack" in the sense that anyone is talking about here. Subliminal stimuli is, as the massive warnings on the article suggest, utterly unproven. There is a difference between being swayed or marketed to, or just too lazy to disengage from the onslaught of marketing... and "hacking". If hacking humans worked, the marketing wouldn't be necessary in the first place.