Hi Fredly, I have bought it and am devouring it, it makes a lot of sense certainly and I am finding it really interesting. I have bought the software too and I find that really fascinating because it gives me a daily fertility assessment (the charts at the back of the book were messy when I used them because my temp is normally below 36C).
I am on my 3rd month of TTC after 18 years on the pill so I am getting to grips with the charting and am learning a lot about my own body which can't be a bad thing.
I think it is also de-stressing to have the info to hand because it makes you properly consider what things might not be quite right each cycle and therefore, for me anyway, makes me less stressed because I can reason with myslf when it doesn't happen that maybe we didn't BD at the right time rather than blame my body.
The first month that AF arrived, I was in floods of tears because I had hoped to have fallen but last month, due to charting, I knew there was no way even before AF arrived so I was spared the disappointment.
I was quite annoyed when I read it because I had wished I had had that information years before and would not then have spent so many years pumping hormones into my body needlessly. That said, in addition to the reasons you have said below for it not being a well known method, I think protection from disease and also the unsavoury topic of CM maybe puts people off talking about it (so British!).
The pics are quite graphic aren't they? - especially the one with the lady with the long red nails and the EWCM hanging from the tissue!
I am trying out the Evening Primrose Oil (I take it anyway for my eyes on my optician's suggestion because they do not produce enough fluid), the grapefruit juice (love the stuff anyway and it counts as one of my 5 a day) and the cough syrup. I figure that even if they don't help me produce more EWCM and therefore conceive, they are not doing me any harm.
I have also ordered some of the sperm friendly pre seed just for extra assistance if I feel I need it.
Good luck with it!