The last musical video went above the line and got only one response; which was a suggestion that it should have been below the line. It dropped off the chart in a day. (The subject matter is a bit obscure) For those who missed it...
Heisenstadter

On the other hand,
Peta gals
was dropped into an already running BS thread, and got lots of comment.

It just seems like there's more action below the line, but who knows?