1) It's not 40 rounds per minute, it's 40 rounds per second. That's 40*60=2400 rounds per minute.
2) The link is to another POE-like video aggregator, which in turn links to YouTube. Here's a direct link: http://www.youtube.com/watch?v=0GAUnuuBkW4
-1 For 3/4 of the video being shots of it spinning
-1 For not shooting anyone
-1 For the video being way too long for the amount of content. Just because you pick a (crappy) song to play in the background doesn't mean the video has to run the full duration of the song.