[sytelus]

It's hard to compress your thoughts and present it in limited time or space while still keeping its essence and power. This is why lot of tweets are iconic: They are presentation of very strong ideas and opinions in tiny amount of space. You can wear them on t-shirt or thumb it out on smartphone while using just few seconds you have. Larger char limit means diminishing of this quality from writers part and also higher cost from readers part. The 140 chars might be accidental limit but it was just the right balance given the amount of tweets that already exists and able to express intent in that much space.