Wall Street is punishing its stock and its management has become a revolving door, but Walt Mossberg writes that Twitter's single biggest problem is that it's just too hard to use: "Try to explain to a mainstream consumer, even someone who's decent at using an iPhone or Facebook, what counts in the famed 140-character limit in a tweet, or the difference between 'blocking' or 'muting' an unwanted follower, or whether 'liking' a tweet means you agree with it or not."
February 5, 2016
.png)
