No, they cannot except for the few users who actually understand what it is all about. I probably did more harm than good by advising clueless OSX-users (as in

No, they cannot except for the few users who actually understand what it is all about. I probably did more harm than good by advising clueless OSX-users (as in "ordinary users") to use the Little Snitch. Now they browse as careless as before but they are "safe" because they have a "firewall" (in which they always click "allow forever" anyway). If you know what you are doing it is a pretty useful "pf with desktop notifications". But what I personally use it most for: Binary traffic shaping for the lengthy conversation my laptop has with apple.com. One click and I can suddenly use ssh and watch something on youtube again.