I've used up so many zip disks making back ups of Net documents.
Originally, that is what the 'Way Back When' machine was for.
But it seems the files in that system are blockable too.
The reach this group has for covering tracks is beyond acceptable.
Interesting info.
I wonder - do you have any of the html pages saved from your first search? If so, View, Source Code, and see what the keywords are. Then pull up a current copy of the same URL, and check the keywords to see if they've been changed. For example, www.microsoft.com has the following entry in their source code:
< meta name="KEYWORDS" content="products; headlines; downloads; news; Web site; what's new; solutions; services; software; contests; corporate news;" / >
But then, I may just be talking through my hat.