I'm interested in this. Random reinforcement definitely had an effect on me in the past. The hardest part is IMHO recognising the problem. I once read an articl

I'm interested in this. Random reinforcement definitely had an effect on me in the past. The hardest part is IMHO recognising the problem. I once read an article about how games were made addictive using random reinforcement. After that I could spot the behaviour in my own online activities and I cut back. I now check e-mail and news sites only three times a day on set hours instead of all day long (once in the morning, once at lunch and once at the end of the day). But, I have never had to use technical solutions to help me with this. Once I understood the problem and could spot it, changing my behaviour and sticking with it wasn't hard for me. But it took a while before I really understood the problem.