Comments on Monday Flashback: Slack Began as Work Platform for Making a Virtual World TypePad2019-05-20T20:00:14ZSLHamlethttps://nwn.blogs.com/nwn/tag:typepad.com,2003:https://nwn.blogs.com/nwn/2019/05/glitch-lilypad-philip-rosedale-stewart-butterfield/comments/atom.xml/