Just now I noticed that with flashblock enabled, I can't view any videos on the sevenload.com web page.
Some debugging later I found out that they have a tag in their CSS which explicitly sets that very
<div> that flashblock internally creates to
I am unsure whether this is just some unlucky circumstance or an explicit attempt to annoy users of the flashblock extension. Nonetheless, this needs to be fixed.
Have fun with the resulting small flashblock-fix userscript.
P.S.: (15.3.09) the new unstable version of flashblock already contains a fix for that problem. Hooray for quick reaction time.