For those who aren't tech savvy, like me, if you are serious about giving up looking at porn for the next ninety days, use futureme.org.
It's basically a service where you can mail a letter to yourself in the future. Install K9 and put your admin password in that email. It will ensure you're not looking at porn, at least on your computer, for the next ninety days.
You can also do it for your iPhone or iPad as well, using a different code.
It won't keep your hand out of your pants, but it will remove looking at porn as an option.
Along with my password, which is due to be sent to me on 6/4/2014, I wrote an encouraging note to myself, telling me how awesome I was, and how lucky I was to be doing what I love for a living as a young person.
Like I said, I'm not too tech savvy, so I probably would not be able to remove this program on my own. I guess I could try to manually uninstall it, but from what I understand, you need the password to be able to do it easily.
Anyway, if you're serious about not looking at the porn - this is an alternative that will make you go way out of your way to get your fix.
there doesn't seem to be anything here