Feature in Brazil, Italy, India, and South Korea.
"Some of you tell us that Tweeting is uncomfortable because it feels so public, so permanent, and like there's so much pressure to rack up retweets and likes," design director Joshua Harris and product manager Sam Haveson said in a blog post.
"Because they disappear from view after a day, fleets helped people feel more comfortable sharing personal and casual thoughts, opinions, and feelings," they added.
