Social ads Guidelines

Besides the general guidelines on the Do and Don't when it comes to promoting page outside of the on-line world, it was quite interesting to learn that
'Facebook permits advertisers to feature unaltered screenshots of their Facebook Page provided that the screenshot does not reveal any personally identifiable information about our users without their written consent.' and also 'A registered trademark symbol ® must be included in all print / online displays of logo or wordmark that reference the Facebook brand.' ' Where possible, include our legal copy on all print promotional materials: “Facebook is a registered trademark of Facebook, Inc.”'
Now, this is quite an useful thing to know. I would add the 'R' symbol and acknowledge more thoughtfully that my writings are ABOUT Facebook and not at all endorsed BY them.