...or whatever.

If that happens, just reload the VoA site, and the annoying site disappears. That's what I always do when I see that page. It is not harmful, and you won't see it often. I once asked sL what it means, but I don't remember what he said. The site asks you to verify something, prove that you are human -- just press Ctrl-F, or rather use "New Tor circuit for this site".