If you have more things to say.
Twitter has just announced that it is planning to double the 140-character limit on tweets to 280 characters and has started testing it on a few select users. The 140-character limit was one of the staple features of the platform, hence the term microblogging where you have to find a way to fit everything you want to say in just 140 characters.
But Twitter said that it had to come with that decision since the character limit and word count varies by language. Japanese users can tweet easily since one character already denotes a word. Research also suggest that when users don’t have to cram all their thoughts into one tweet, they tend to tweet more.
Since it’s still on the testing phase, the company can’t guarantee if it will roll it out completely to some users, but there’s a good chance that you have more space to say what you want if the experiment is successful.