From their web site...
Erowid is a member-supported organization providing access to reliable, non-judgmental information about psychoactive plants and chemicals and related issues. We work with academic, medical, and experiential experts to develop and publish new resources, as well as to improve and increase access to already existing resources. We also strive to ensure that these resources are maintained and preserved as a historical record for the future.
We imagine a world where people treat psychoactives with respect and awareness; where people work together to collect and share knowledge in ways that strengthen their understanding of themselves and provide insight into the complex choices faced by individuals and societies alike. We believe that truth, accuracy, and integrity in publishing information about psychoactives will lead to healthier and more balanced choices, behaviors, and policies around all psychoactive medications, entheogens, herbs, and recreational drugs. Erowid's vision is to facilitate and create resources that are part of the evolution towards this goal.