People were pushing for everyone to comment at least once a day so all the lurkers were counted as active users. It's a little bit of ~~The Pot Roast Principle ~~ at this point.
Edit Ok, so don't just pick the first link off Google folks. That got weird fast. Have this Less insane version instead.
To be honest I picked the first result on Google, half-heartedly scanned it to make sure it actually told the story about the roast and went "good enough"
I just went back to reread it and I'm kind of horrified now. Going to have to edit in a less insane link.