I use Little Snitch on my Mac. I found myself just "allow"ing everything all the time anyway. I think most users just get used to pressing "OK" and stop even paying attention to what they are agreeing to. I know I get lazy and do that myself. Instead I wanted to briefly alert the user and let them make their own decision, then we also added in some malicious host monitoring and other features to help. Users can use our "network time machine" feature to go back and time and see exactly what happened in the past. I haven't seen another product that does that.