Filtering by reserved word or key word list, testing domains

From what I can tell the current blocking mechanism works by utilizing the custom list of blocked domains in conjunction with the list of categories set to be blocked.  

 

is there a currently way to set up a list of key words or phrases to be blocked.  That is, if these words/phrases are found anywhere in a web page then that page is blocked.  

 

Also:  is there a way to test what categories URL/domain is blocked under (without having to block all categories)?  I presume most domains are under mulitple categories anyways.   This is a good check for deciding whether to block individual sites or a whole category, among other things.

 

mpollack