Jack's back: 11 things the new Twitter CEO needs to improve

From stamping out abuse to finally deciding how many characters is enough, here's what should be in Jack Dorsey's own 'While you were away' feed

Twitter's character limit dates back to the days of SMS messaging: it's long enough to include the whole message, an 18 character username, one colon and one space per 160 character text. Now Twitter offers pictures, videos, and links, and is barely used over text message at all. As a result, users have taken to screenshotting large paragraphs of text to tweet longer missives. The company has to decide whether it's going to attempt to stay a fast and brief messaging service or become a slower, richer social media site - and there are suggestions that the new chief executive Jack Dorsey may be backing the biggest change in the site's history.