The number of comments people leave for a youtube video is a fairly good indication how popular a channel is.
My last count: People left 2,968 comments for a total of 70 videos. That comes down to 42 comments per video on average. Not bad at all, for a channel that is just 13 months old!
People left 188 comments for "Slingshot vs. Ballistic Gelatine", that is number one.