I dislike sponsored ads on Facebook on my iPhone client, and have no way to turn it off. So when I saw an sponsored ad for a local acupuncture clinic I added a comment of a link to this recent study
. Two minutes later my comment was deleted and comments disabled on the ad. At least I inconvenienced them a little. If I could turn off those ads I never would have had to see them and would not have bothered seeking them out.