@rob the happenings mentioned by Emilio in the comments below his answer
here was what really broke things for me personally on Physics SE. I mean, why does PhysicsOverflow get a "special treatment" such that summerizing and linking to useful on-topic posts there in comments is spam and ban-worthy, whereas summarizing and linking to posts on Wikipedia, physics blogs, PhysicsForums, Quora, etc is ok and even approved?