Snapchat and Twitter violate each other's personal space

Things are about to get testy between the Snapchat ghost and Twitter’s birdie as the popular Internet companies invade each other’s space: Twitter has launched a private group messaging feature, while Snapchat added news content.Snapchat released “Discover” on Tuesday, a new section of its app that displays content like articles and videos from news outlets including CNN, the Daily Mail, ESPN and Warner Music. It’s all pretty slick, and a far cry from the impromptu disappearing phot