Interesting. Some drop off to zero. I wonder why?
If you look at the active vs. total members of teams in the 600 to 700s rankings, many have but a few die-hards that are still active. The teams are like a super-NOVA where after the initial burst, there is a low residual level of output.
In our case [~200 active members], if all team members were to keep going with one computer each putting out 50 points a week, we'd have 10,000 points per week, which would put us at a sustainable ranking of under a hundred [if we amassed 5 million points initially].
In my case, I am currently running all the hardware I can assemble here in my personal, at home, "computer lab" [my name] [Mrs. P2's name = "this room looks like a junkyard"]. This results in approximately 100x my "normal" CPU cycles worth of points a day. At some point in the next few weeks I will begin to throttle back [~$30 extra/mo in electricity] in the "lab" and see if I can convince the IT folks at work to let us run FAH on the computers at work which do have plenty of truly "unused" CPU cycles.
'Till then it's great fun to watch the team smoke up the rankings.