diberry - 3:24 pm on Aug 7, 2012 (gmt 0)
I keep trying to think of a group of humans who could account for these "zombies" (as defined by not engaging with one's site meaningfully). Spammers from particular time zones? Nope, backdraft7 is getting US based zombies, and there's no reason US spammers would be showing up without normal US visitors.
It has to have something to do with Google's geo-location stuff, I think, and/or testing different data sets. And yet, 1script's account of the possibility that the zombie traffic is also doing Google little good puts a new light on that.
So, here's a question I don't think anyone's asked? What if these visitors weren't people? What if they were bots or something like that? Can anyone imagine any sort of scheme along those lines that would benefit anyone, anywhere? I can't, but it's a possibility, so I thought I'd raise it. (It still wouldn't explain where the more typical visitors are disappearing to during those times.)