Borderline psychotic social media users of the world, rejoice! You can post violent, threatening messages on Facebook and claim it was poetry, or something, according to the U.S. Supreme Court. Yesterday the highest court in the land ruled in favor of a Facebook user from Pennsylvania who had posted some pretty unsettling comments on Facebook, including one that appeared to threaten his wife's murder.

Anyone who has ever made the mistake of flying has almost certainly also thought about posting something nasty about an airline on social media -- and maybe even gone and done it, if only to vent one's frustration. But which airline is actually the most hated by its customers? Well, now we know: Crimson Hexagon has compiled lists ranking the major airlines by positive and negative sentiment, based on its analysis of millions of tweets posted in 2014 and the first part of 2015.