I know you can place adsense sneakily into articles and such on blogs like inside the article, but if your userbase is a little more "internet" than the average person surely this would turn them off? I mean IMO it's okay if you're selling something like e-books or garbage, but if it's a site like engadget or digg then your users are going to demand quality and are coming for the articles, and having obtrusive ads in articles would surely put them off. Am I right in thinking this, that it looks unprofessional and could lose you readers? I would like to think that placing them in other places would work, but does anyone have evidence or experience of this particular thing?