I've heard about it. Apparently, it states all the things women don't want to acknowledge (and I'm sure we've all, at some point or another, tried to optimistically second-guess men, hoping for the best). The author basically says that if a man likes you, he'll call you, and if he doesn't, he's not that interested (whereas women tend to hope for a better explanation--and we've all at some point done this and/or spent a long time on the phone listening to confused friends trying to figure a man out). There has to be another reason (other than his not being into you) that he hasn't called--he's afraid of commitment, hasn't gotten over the ex, has been really busy at work, isn't good at expressing his feelings, etc.). It's written by a man, and I caught the tail end of an interview with the author--what he said was just common sense. (And for the men on this site, it works both ways--if a woman says she'll get back to you when it comes to confirming a date, the interpretation is--"I want to see if anything better comes up, first." If she shies away from kissing, much less anything more physical, repeatedly, it's not because she's a "timid little bunny"--you just don't turn her on. In my own experience, I went on a date with a man once (not even a date, really, just a "get together for drinks" deal, and he clearly missed all clues that I wasn't interested in pursuing anything--I think men are thicker than women when it comes to reading people. It was a Friday night, yet I wanted to call it a night after an hour or so. I had Caller ID (a little gadget with a screen you could get from the telephone company for an extra $10 or so a month that displayed the listed name and number for incoming calls--a great way to screen calls), and the same guy started calling and hanging up 15 or 20 times a day. That went on for a week (whether I was actually home or not) before I finally picked up the phone and said, "I see you've called me several times"--understatement of the CENTURY--and he said he'd called only twice since our date. "Hmm, that's funny. My Caller ID shows differently."
Men also seem to mistake a woman's being polite and maintaining some eye contact during a conversation as her being really into him--no, it's called being polite.
Anyway, that book sounds interesting--it's obviously written for singles. I have five brothers, and it was always very clear if (and how much) they were interested in a woman. They'd talk very openly to me about it. I was often amazed at the women who just didn't get that they weren't interested: calling them all the time, dropping by unexpectedly, calling me to get advice--how do you tell another woman that she's only hurting herself by pursuing things?--etc. I was amazed at the lack of pride. Again, men do the same things sometimes.
Another good book (and as corny as the title sounds): "Women Who Love Too Much." If you've grown up in a dysfunctional family and/or found yourself repeating patterns in your relationships (such as getting involved with an alcoholic/drug addict/porno addict/etc., and/or someone who takes but doesn't give, and/or someone emotionally or physically abusive, and/or someone someone who cheats on you, etc., it's a must-read). Again, a majority of people, both men and women, have probably had an unhappy relationship with someone due to one or more of the factors listed. The thing that should cause concern is if you find yourself repeating the pattern (same issues, just a different name and face).