Smile Sheets – Lovable? Or Exponentially Dangerous? Curated #chat2lrn tweets 0 By Martinc on April 22, 2016 Chat2lrn Storifies, Latest Here are our tweets from the Chat2lrn Twitter chat on happy sheets. [View the story “Smile Sheets – Lovable? Or Exponentially Dangerous? Curated chat2lrn tweets” on Storify] Share. Twitter Facebook Google+ Pinterest LinkedIn Tumblr Email