Cialdini's book is mostly the third, with a little touch of the second.
And read by people who want to read the first ;)
And also who want to read the second or the third. But yes, of course, writing for one audience won't stop others taking advantage.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.