Not totally sure peeples. My interpretation of that is it states 'Overly Promotional'. Right away that means to me probably only one link to it is safe. I would not mention it very much directly by name either. For one using too many keywords is considered Spam, which in essence means 'Overly Promotional'. So, words like 'It', 'They', 'There' and such would probably be wise.
Here is the link to Learning Center Hub titled 'Reasons Why Hubs Are Moderated (& How to Fix Them)' at the 'Overly Promotional text capsule. (You may have to scroll a little)
Here is the link to what is considered 'Spammy'