Hi nicomp, I can't answer either question, but I have an opinion on it. These ads are everywhere, not just here. I think companies as hubpages allow these ads for, perhaps, a fee. I've been typing (linked) after my links so the reader knows it is my link. The reason is I found one advertiser with these ads on my hubs lying. Not knowing who is doing the advertising, I do not want people to think I endorse the ads; therefore, I type (linked) when I'm doing the linking.