Even without action by Facebook like this, it's been clear to me for ages that Upworthy's lifespan will be very, very limited. People will only keep clicking on

Even without action by Facebook like this, it's been clear to me for ages that Upworthy's lifespan will be very, very limited. People will only keep clicking on those links until they build up enough "mental antibodies" to linkbait headlines, and I'm betting most people will hit that point within a year or so. (How many people do you know who still pass along email chain letters about some mysterious kid with cancer?) I'm sure there's a core group that will keep sharing Upworthy links forever, but if they haven't already hit a peak in popularity I expect that they will soon.