This is by far the most extensive, well organized, easy to understand website. I recommend this all the time to my friends. I go to Erowid to educate myself Before i decide to consume a substance. Their information has helped me make informed decisions. This website is most useful because i take prescription MAOI inhibitors, not all substances agree, and can be deadly. There's even a section under every substance with extensive and detailed user experiences. Very helpful in knowing what to expect.