No, you've got my point backwards: Absent external effects, it's easier to write a long message than write concisely. Twitter in its current form imposes an a

No, you've got my point backwards: Absent external effects, it's easier to write a long message than write concisely. Twitter in its current form imposes an artificial cost on long messages, which encourages you to do the extra work to write something short. Remove that cost, and you'll get more lazy, long messages. That's my theory, anyway.