I believe you that #30 < #5. Partly because if you ever hit #5 the total amount of time you spent on front page is greater. I'm really curious about the jump f

I believe you that #30 < #5. Partly because if you ever hit #5 the total amount of time you spent on front page is greater. I'm really curious about the jump from #30 -> #31 though. a) what's the total drop in activity? b) how much has this changed in the past year? c) is there a 'better' cutoff to choose?