pageoneresults - 5:01 pm on Dec 2, 2010 (gmt 0)
I've just been reading up on it, has anything much changed since your post?
Not that I am immediately aware of. It would be really difficult for me to provide any substantiated information in this area. It's been almost 5 years since we first started using NoArchive and overall, I just feel that much safer always having a fresh copy of our documents being displayed in the SERPs. On top of that, the SERP listing looks much cleaner without the cache link. :)
If I list out the Pros vs Cons, there are only 1 or 2 Pros and a very long list of Cons. That in itself should give most enough reason to be concerned about how their cache content is being used - and abused. :(