In all reality, I don't think we would see a whole lot of advertising, at least not at first. Just because it is legal doesn't mean it won't still have a bad stigma attached to it. Marijuana isn't like alcohol. Sure it tastes and looks different, but, it's not like a beer that you are going to be sipping over and over again. There are only two things that people are going to really care about, THC and CBD content. I just don't think there would be much to advertise, other than a company logo and a pretty picture of a bud.