You may actually have something there. The average word length in English is approximately 5 letters, which gives you an average of about 56 words per tweet.

You may actually have something there. The average word length in English is approximately 5 letters, which gives you an average of about 56 words per tweet. That's roughly 5-6 solid sentences, which is... one good paragraph. It probably didn't work as well before they raised the character limit from 140 to 280.