Instapaper apologises for profanity-filled email

Most popular story - picked by an algorithm - had oh just a few uses of the F-wordBookmarking app Instapaper has apologised to users after a recommendation algorithm went awry, delivering a profanity-filled story to the inbox of subscribers to the site’s email newsletter.Instapaper Weekly, introduced in January 2014, algorithmically picks the most popular stories saved to the the app over the previous week, and emails them out to users. Every new user since December 2013 has been automatically