Also related to the ads, does anyone have some marketing distillation of why they always use the words "weird trick"? Weird trick for weight loss, weird trick for language learning, etc.
Basically, the trick is "weird" because it's not too positive, so as not to make it sound false and unbelievable, not negative either, and uncommon enough to attract attention and pique interest. Of course, overuse of the technique desensitizes the viewers and it will eventually fall out of favor.