I have people faving things two seconds after I hit the "Submit" button. No one does that unless they're counting on the faved person's curiousity to say "Gosh, I wonder who this person is that faved my submission". These people want to pad their page view count because that's an important part of life, or are using the "Favorites" system to self-promote their art or music or woodcarving business. If I were on the staff of an ad-supported site, I'd be concerned about people circumventing having to take out ads for their page. The other thing is, I'm kind of a stickler for people faving the submissions on the page of the artist that actually made what it is I'm submitting to my page. I even put it in the description, "Don't fave this one, fave the artist's submission".