I actually find that most regional theaters have the notes in too wide of a distribution - I am pretty sure we when had to stop running them off and could just add people to an e-mail list, it became easier to add the gift shop manager, the rental manager, etc, etc.
The last thing I want to do is censor my production report writing, but I at times do find myself editing and reediting a note of (somewhat) confidential nature or that is just a delicate nature. For example, recently, in a performance a report, a mis-entrance was noted, and then someone from the LX department, seeing the actor, made a joke to him about the missed entrance. It was all a good nature ribbing, but it did warrant an e-mail that the information in the report should be considered confidential. Noting actor's lateness (to leave a paper trail), frustration with a prop not working, etc, etc, etc, are all sort of COMMON notes, that perhaps should not be read by everyone in the cast and should not be discussed - at not posted on the call board (if we did that, I would have two reports).