While Facebook is good for keeping up with your real-life friends (or people you’ve somehow convinced to approve your friend requests), Twitter lets you live vicariously through celebrities, minor celebrities, and strangers.
Want to know what Alyssa Milano thinks of fur? She does not like it. You could wait hours (days? weeks? months?) for the mainstream media to report that fact, or you could have gotten it directly from the source in real-time. If you can think of a better use for a phone, I’d like to hear it.
More on Time.com: Apple’s Hits and Misses So Far