I'm not surprised about Silly boy. Rihanna is just HUGE now, everything is demo for her getting spins (Emargency Room, Bad Girl, and now Silly Boy is selling) altought they probably will never be sand by Ri, just her name alone brings the sales up.
For those who are having trouble understanding what Diego was trying to show....Best I Ever Had has an explicit and a clean version. The clean version is at 44. If you add the popularity bar of the clean version to that of the explicit, the combined poularity of Best I Ever Had is greater than that of Boom Boom Pow.