Quote Originally Posted by Strat
that didn't really answer the question did it?
Nor did that...

A co-op, essentially, is like a pharmacy, but dealing primarily, if not exclusively with marijuana and its variants. In areas in which state law (and only state, not federal) has declared Medical Marijuana legal, these drug stores, if you will, off a generally safe method of purchases medical herb, provided you have the necessary documentation. It removes the sketchiness of a dealer from the picture, thus helping everyone involved.