Previous thread on the issue from last fall:
Screen shot of what what we are talking about.
@Webnauts risky. Any time you block google spiders for anything - you risk consequences on SERPs. This has to be something Google addresses from their side. I would bet, Google uses these screen shots internally for hand checks on sites.
> A commonsense standard for noarchive is definitely in order
We have one - please see your favorite law book under the phrase, Copyright Law.