His post wasn't Twitter specific; he just used Twitter as an example. But since you asked, here's a couple I can think of: * A rate limit on the number of Twee

His post wasn't Twitter specific; he just used Twitter as an example. But since you asked, here's a couple I can think of: * A rate limit on the number of Tweets per hour/day/week * Ability to follow or unfollow * Ability to index my tweets if they're private