Can't comment on having any experience.
My thought on the utility of the paper --
I would classify people in 3 basic categories (though this is more of a continuum than categories):
1) People who would never sue
2) Those who would be reluctant to sue, but might if the problem is egregious enough
3) Those who would sue at any problem.
Category (1) you wouldn't have to worry about. Category (3) will sue you anyways (unless a document is iron-clad, and very few are). But the paper might stop category (2) from even bothering to talk to a lawyer, so they wouldn't necessarily know that that the paper is basically worthless.
My 2 cents.