For some Twitter users, 140 characters just is not enough to get out what you need to say. Twitter has now recognized that and has begun testing a new 280 character limit within a small group, so you may eventually be able to tweet your hot takes with even more heat.
Really, it comes down to more than just a simple case of Twitter wanting to give folks more characters to tweet with. It comes down to language cramming. As noted in the Twitter blog post, with the exception of Japanese, Chinese, and Korean, folks have to deal with cramming more letters into their tweets when tweeting in English, Spanish, Portuguese, and French.
We see that a small percent of Tweets sent in Japanese have 140 characters (only 0.4%). But in English, a much higher percentage of Tweets have 140 characters (9%). Most Japanese Tweets are 15 characters while most English Tweets are 34. Our research shows us that the character limit is a major cause of frustration for people Tweeting in English, but it is not for those Tweeting in Japanese. Also, in all markets, when people don't have to cram their thoughts into 140 characters and actually have some to spare, we see more people Tweeting – which is awesome!
I have to say, it's pretty rare that I run into any character limit frustrations with Twitter but I certainly know plenty of folks who do, so it's great to see Twitter experimenting with these character limit increases and better ways to control Tweet storms. Still, I'd prefer to have an edit button over everything else right now.