Karl-
They can use a prefilter to through away this code, though. Better tell them it is illegal what they are doing and ask them to stop stealing bandwidth.
powerpedia.org is not some deliberate scam, it's an attempt by one Wikipedia user to set up a "free energy" section on Wikipedia as a subset of his user pages. That will of course not be allowed. The reason for the ads / frame capture is that he used some cheap ass domain service that is sponsored by doing just that. These domains are normally registered for people's *own* use, not for capturing someone else's content. That's why it is highly unlikely that they would take the effort to circumvent our frame-breaker.
So for now, this seems like a perfectly appropriate solution. Thanks, Brion!
Regards,
Erik