I felt that that particular piece of sarcasm added more to the conversation than a simple statement of my agreement, which is distinct from an upvote, however,

I felt that that particular piece of sarcasm added more to the conversation than a simple statement of my agreement, which is distinct from an upvote, however, I was also unaware of this general policy/behavior of the forum as it is mentioned in neither the FAQ nor the guidelines. Thanks for the heads up. edit: just to be clear, this is not sarcasm.