TechTwitter CEO Dick Costolo Announces Resignation, Company Removes 140-Character Limit For Direct Messages Twitter CEO Dick Costolo announcing his resignation as leader of the company, with co-founder Jack Dorsey stepping in as interim CEO. The social media network also announced that it would be removing the 140-character limit for direct messages.by Christian de Looper
CultureNielsen Social Lists Most Tweeted TV Shows: 'The Walking Dead,' 'Super Bowl,' 'The Bachelor,' And Moreby Jan Dizon