Always the hallmark of a real contender. Oh, did I say "hallmark"? Hope that doesn't cause you to stumble. "Stumble" means to trip while walking; in this case it's a metaphor for thinking.
Hope that was clear enough for you.
Nice strawman argument
Huh. Considering the primary point of the video was how open signups are bad, I don't know why you contradicted your comment on the other thread and said this video has no valid point.
The AT protocol is open, though