I'll start a new topic on this as all your thoughts are welcomed.
We have ISA 2004. I have been told by my NM that "under no circumstances are we getting rid of it".
So, in lieu of my need to block by keyword and not just by URL, suggestions are welcomed for products that will work with ISA, but cost as little as possible.
Censornet is the recommendation that's stood out so far (currently pulling that down and hope to play in the next week or so)...