Site is cracking down on 'targeted abuse'
                                
                                
                                    (Newser) -
                                    Twitter has promised to crack down on "targeted abuse and harassment," and it appears to be serious about it: A conservative writer accused of leading  a hate campaign against Ghostbusters star Leslie Jones  was banned from the site Tuesday,  BuzzFeed  reports. Milo Yiannopoulos, Breitbart.com's tech editor,...