Marco Arment (https://marco.org/about https://marco.org/about) wrote an ad blocker extension (https://marco.org/2015/09/16/peace-content-blocker https://marco.o

Marco Arment (https://marco.org/about https://marco.org/about) wrote an ad blocker extension (https://marco.org/2015/09/16/peace-content-blocker https://marco.org/2015/09/16/peace-content-blocker) that became a number one seller on iOS for awhile. Shortly thereafter he decided that he didn’t want to be in the ad blocking business. Apple proactively gave everyone a refund who bought it. https://marco.org/2015/09/21/peace-refund https://marco.org/2015/09/21/peace-refund Apple would probably do the same for third party Twitter clients if asked by the author. Of course Marco could easily take the hit since that was shortly after he made a few million when Tumblr was sold to Yahoo.