[JeremyChase]

Or set the canonical address of your cached pages to the real page.

[StavrosK]

Do you mean the "base" tag? We already do set that (admittedly, after this happened and because of it).

[fhars]

No, he meant the rel="canonical" links.

[patio11]

This does not work across domains, guys. (Among other reasons, it would turn injection attacks into $X million bugs for some companies.)

[StavrosK]

The google blog says it does...

[StavrosK]

Oh, that sounds easy enough to do, we'll implement it right away (it should be live in a few minutes. Thanks for the tip, we didn't know about this duplicate content situation...

EDIT: Added!

[davecardwell]

http://www.google.com/support/webmasters/bin/answer.py?hl=en...

[StavrosK]

Thank you, added!

[JonM]

I honestly didn't know this existed.... thanks!