In my opinion, the best balance would be to keep the focus on short, succinct, 140 character tweets, but to also give the option to add a "read more" section to

In my opinion, the best balance would be to keep the focus on short, succinct, 140 character tweets, but to also give the option to add a "read more" section to any given tweet. So you could eliminate tweet storms and give people a convenient outlet for longer-form thoughts, without just bloating everything. I expect 240 characters will largely result in people just using more words to say the same thing.