Sand - 11:57 pm on May 31, 2012 (gmt 0)
our stats clearly indicate that there is some sort of throttling also going on.
Yes, I feel like I'm seeing the same thing. Just about every hour is the same in terms Google visits. If an hour gets off to a huge start, it dials back down to nothing for the remainder. If it gets off to a slow start, it revs up right at the end and leaves me right around the same target.
It's weird, and absolutely feels like throttling.