http://www.aponetworks.com/skinup/
This is a website I created several years ago. Today I updated the Addiction test algorythm via UNISEQ software. Now you get a formalised result from less questions.
If you are a drug user, I suggest reading this site because it dispels many of the myths about drug use - this is informative and addictive reading if you are young, and just starting out on cannabis.