Gonna try something called PureSight - It's an Israeli company - could be wrong but I seem to remember that Phil Rosenthal recommended it as an up and coming filter...
Will report back.
Okay. Back with my report...
In a nutshell: FAIL!
Some nice features but I always get the feeling that foreign companies lose key things in translation.
Main gripe is that they don't tell you why a site is blocked (at least not on the webpage itself - there may be a log somewhere). How the heck am I supposed to tweak it if I don't know why you blocked the site?
Also seemed to be getting some false positives on harmless sites.
I imagine if they polished their product it would work well and I am sure it suits the purposes of some but my vote is nay!
p.s. I feel that on every blocked page there should be buttons that say: "login to allow this site" and "email request to administrator for this site" etc. - You gotta make it easy to adjust and work with ... people don't have patience for this nonsense. (at least I don't)