Nick Bilton:

Twitter does offer a star-shaped “favorite” button, but it seems there is some confusion over what it means to favorite something. I’ve been asked the following questions about it: “Is the star to say you want to save that tweet for later?” “Is the star just a way of saying you saw a person’s tweet and liked it?” “Is a favorite a like, or a dislike?”

The long-neglected favorite button sure seems like it could become something very powerful for Twitter if they can get the messaging around it correct.