My sad experience is that when you spread the word about Bitcoin (or other coins), people get a sense that you are responsible for explaining them how to make it work and make money of it. At least for me, that means lots of questions and enquiries as if I was the owner of the thing: "Hey this thing you told me about does not work!", "I have done that and that and no money yet!!" etc.

So I am a little afraid of doing such a thing.