Knowing myself only too well as an x-addict, I made a vow for a year not to use unprotected internet unless my wife is in the room with me and can see the screen from where she is sitting (if she wants to). When I need to make picture searches for my graphic work, my wife opens the internet for me using the password that only she knows, and she stays in the room while I search, sitting facing the screen. Even so, improper pictures often do appear from time to time, even when making searches with innocent keywords. So each time before I make "picture searches" for my work, I say a short prayer to G-d to protect me from such images and to save me from unhealthy lusting that takes me away from G-d. And the amazing thing is that whenever I say this prayer I walk away afterwards feeling uneffected, even though I may have inadvertantly seen a bunch of things I didn't want to. The pictures simply don't effect me as much as they used to when I say this prayer.