I don't currently have the time to respond to this in depth (I plan on doing so tomorrow), but I actually have done the math, although only for limited periods.
I’d love to see it :). Actually, I gave a presentation once that had some Hacker News stuff in it almost exactly a year ago so I’ll see if I still have the scripts for that, so I’d have at least a spreadsheet to play around with.
Having a pretty tough time finding my data here (not entirely sure which device it's on but it doesn't seem to be on the one I thought it was on), but if I can find it sometime soon I'll shoot it over to you via mail or something!
