That's a great question, and I'd love to know the answer as well.

I kinda remember reading something about it before, can't remember which state it was or if the info was legit, but it's definitely ok to freely give it to another mj patient, but not sell it. I guess when money is involved with selling/buying it can only be done through something like a dispensary so it can be taxes and regulated...?

Couldn't find the site I had found before, but found this older article: http://stopthedrugwar.org/chronicle-...iiaction.shtml