Currently, little data exists on heavy marijuana use and withdrawal. Weedless.org is collaborating with researchers to explore this topic and others. We have created a short, anonymous questionnaire which we will use to focus our future research efforts. Your participation is appreciated and completely anonymous. You may skip any questions that make you feel uncomfortable and you are free to withdraw at any time. At the end of the survey, you will be given the option to anonymously share your responses with the Weedless.org community.