I haven't read the book but I saw the guy on Oprah and even though I thought it was a stupid concept, he actually had some really important things to say. It's kind of an extreme though... as in, the women who need to hear, "He's just not that into you" are kind of out there. I mean, most women just know that if a guy doesn't call you back, or doesn't show for a date, or doesn't want to meet your family, or doesn't... well, you get it, he's just not that into you. The women who do not get this are the ones who might benefit from the additional drilling of the concept into their heads.
We all know that one girl right, that one who just won't admit that a guy doesn't like her? Keeps making excuses for his awful, not-into-her behavior? "Oh, he is just so busy with his job" or "Oh, he just knows I'm going to call so he doesn't want to bother me..." etc.
Funny thing is, these are the type of women who probably would not buy a book called such a name.
And "Face It, You Weren't That Into Him Either"? Maybe. But I think these are for entirely different sets of women.