In the first place, I have not thought of the link possibility. Someone mentioned it earlier and I gave some thought to it.
However, I realized that I do not have any control such as:
1. How many people have requested and obtained the manual? If the number is low, maybe I should promote it more aggressively after all, it is good material within the manual.
2. If I ever come up with an improve version of this manual or if I come up with Precision Potting Aiming System, I can write to these people who have received the manual and see if they want this new manual. If I create another link, some or many of these would have missed out.
I have written a 28 pages manual and whether it is useful or not, depends on the individual. To write to me via email really meant nothing to the requester and what he gets is a manual borne from my sweat and perspiration. In future, he could easily block my email or direct it to spam if he doesn't want further correspondence with me.
I am just a simple guy with no ulterior motive and my intention was to hopefully help the average players, where they are seeking to play sidespin effectively, or to increase their percentage in making the pocket.
A few players have already attested that the manual is of use to them, here in Azbilliards and also in my youtube video.
Best wishes and thanks for the suggestion.