buysellads twitter ad sales ... Any of you guys try any of these? Combo, site and Twitter? I'm completely new to any and all online marketing (though reading a lot, vs. just posting questions). We're a myopia rehabilitation clinic with some online programs - basically, fixing vision through targeted focal exercise. It works, but it's not something people are searching for (we're cursed being mostly an unknown vision repair choice). Thoughts from the sages on the marketing mountain?