Shivon Zilis@shivonOfficially calling @jack 'the unGrinch'... voluntarily gives back 10%. One of few w/ all heart and a long term lens http://tech.fortune.cnn.com/2013/12/20/squares-dorsey-returns-10-of-his-shares/…7:18 PM · Dec 20, 2013·Twitter for iPhone1 Retweet2 Likes