I just took a look at the old mac proxy.  It uses WebDoubler 1.1.  A
very nice program.
Parses the html for keywords (something I haven't seen on the other
proxies) and will block the entire sight if a word is found.  Web
interface for configuration.

Maybe I won't go to linux after all...
I haven't found anything for linux that will compare to this program.
The blocklist is there from the start too...

I'm really starting to like this program.  If there was something for
linux that could do everything this program does I'd go with it but I
haven't found one.

sim