jpch - 8:14 pm on Dec 29, 2012 (gmt 0)
About the 12th or 13th of December is when the ugly arrows started showing up all over my sites, and I think they're actually helping.
I compared the first 13 days of December to the days since. My Page RPM is up 31%. It could be due to more than the arrows but kind of hard to discount the effect entirely. If it stays as high as it's been into January I'll believe it has more to do with the arrows and less with Holiday and End of Year advertising spend.