From what i've seen, and just observations here.
All 64.233 sub'd datacenters are pretty consistent and stable. 64.233.161.105 and 64.233.161.147 are the only two I've noticed which are producing swaying / dancing results from that datacenter series.
.99s are shifting, without question... and check out the allinanchor, some wacky sh1t going on there as well.
Could be others but those are the ones I've been noticing with our keyword set thus far. Anyone else seeing other sh1t then give the heads up.
FF