Interview: Slack's Stewart Butterfield on the favorable fundraising climate and options for spending the $160M he recently raised Farhad Manjoo / New York Times : New York Times 2015-04-18 Farhad Manjoo New York Times, Slack, Farhad Manjoo, Stewart Butterfield Related Coverage View article Vox View article Boing Boing View article The Verge View article SocialTimes