[xj9]

that's true, but the way you paint it sounds like there is no web of trust or reputation IRL and that its all shady ad-hoc meetings. buying smack off of a random stranger is junkie behavior. considering the estimated size of the black drug market, there is no way most drug users fit into this category. most drug users must be functional for the market to be that big. ergo the most likely scenario does not take place in a dark alley among strangers.