Cyberspace cowboy

How to surf the Web (on weed)

Proponents of decriminalization
NORML (National Organization for the Reform of Marijuana Laws)

Common Sense for Drug Policy

LEAP (Law Enforcement Against Prohibition)

American Alliance for Medical Marijuana

Drug Action Network

Marijuana Policy Project

No Jail For Pot

Students for a Sensible Drug Policy

Proponents of prohibition
Office of National Drug Policy

Partnership for a Drug-Free America

National Drug Intelligence Center National Drug Threat Assessment: Marijuana

National Academy of Sciences Institute of Medicine Report: Marijuana and Medicine (1999)

MAPS (Multidisciplinary Association for Psychedelic Studies) Medical Marijuana Research

AMA (American Medical Association) Report on Medical Marijuana (Full Text) <p

>How Stuff Works: How Marijuana Works

Medical marijuana users
Compassionate Coalition

Recreational users/growers
Weed Guru (forums are interesting)

Cannabis Consumers Campaign

Very Important Potheads (VIP)

Christians for Cannabis

Weed Talk

Roll It Up

Marijuana Anonymous