Pulled out my slide rule and some vice grips and came up with these stats:

Average number of videos sifted per month. 42
Average numbers of votes receive per day. 49
Average number of votes per video. 35
Average number of videos I vote up per day. 9
Average number of comments I make per day. 8


Anyone else care to chime in with theirs?
Any other numbers we can come up with?