Make it interesting. Content + promotion = success. If you have no content, and tons of promo, you’ll get listeners, but not for long. If you have no promo, but tons of content, you’ll get a few hardcore listeners, but not as many as you’d like. The question of promo is pretty much the same for anything on the internet =) But I guess the real question is, that you’ll need to answer in your promo and whatnot, why would I want your opinion on anything?