blocking based on meta keyword tags?

I'm looking for a firewall (software or hardware, preferably hardware)
that can block web pages based on html meta keyword tags that might be
in them. (A software solution would have to run on an independent PC,
not be installed on the PC doing the web browsing).

Basically all I'm trying to do is weed out adult products from
Amazon.com. Amazon does a creditable job of using the keywords, but
now I need something that can filter based on them.

Does anybody know of such a thing? Many router/firewalls claim to
block based on "keywords", but the keywords they refer to are embedded
in an URL. That's not what I want at all.

Thanks!
Received on Fri Dec 23 20:08:28 2005