Limiting yourself to 140 characters or fewer — Twitter will count them for you — warms up your creative muscles, sharpens your writing, and compels every word to pull its weight.
Most of us write the way we talk — with extra words and clauses that provide social lubricant. Classroom essay assignments — "Five hundred words on the Federalist Papers by Monday!" — only worsen the padding habit.
The challenge with Twitter is to get to the point. How can you distill your message most effectively? Which words can you eliminate without losing the meaning?
Once you try it, I'm betting you'll be hooked, as I was. And you'll be in excellent company.
By the way, although I'm mostly keeping politics out of this blog, I'm a lot more opinionated on Twitter. (I kept up a running commentary during last night's Republican National Convention.) Follow my tweets here.