I found a new way to encourage productivity.
Believe it or not, but it's STICKY NOTES!
A sticky note on your monitor is something you constantly look at while at the computer. A sticky note reminding you to go back to work actually does help, because you are constantly reminded by looking at it!
I started to experiment with this and it seems to help. I spend less time browsing etc,...
(However, I did spend the time writing this post