Twitter introduces Fleets, posts that last 24 hours only.

Twitter on Tuesday launched a new way to communicate on the platform. It’s called Fleets and it’s intended for users who have something to say — but not necessarily something that they want floating around social media for decades or, really, even days to come.

Fleets are ephemeral text/ photo/video messages — either meant to stand alone or in response to a tweet — which users send out much like they would a regular post. The big difference is that these items stick around for 24 hours and then — poof! — they are gone. So, in that sense, one can think of Fleets are disappearing Tweets.

“That thing you didn’t Tweet but wanted to but didn’t but got so close but then were like nah. We have a place for that now,” Twitter tweeted on Tuesday.

Of course, as many observers noted, the concept is hardly new. Many viewed the development as Twitter’s answer to the temporary-message systems offered by Snapchat, Instagram and others. In general, social media companies are trending toward offering forums with more private communications.

Fleets is being billed as the perfect forum for those one-liners, barbed comments and other zingers that seem funny in the moment, but might not age well. In other words, expect Fleets do very

big business with politicians and celebrities, many of whom have been burned by their bad judgement on social media in the past.

Not surprisingly, many stars were already using Fleets on the first day of its global launch. The early adopters include Paul McCartney, Miley Cyrus, Justin Bieber, Jennifer Lopez, Kim Kardashian, Lil Nas X, Ariana Grande and Megan Thee Stallion, according to a news release from Twitter.

Currently, the Fleets function is only available on your mobile device. There is no word on when, or if, it will be made available on laptops and other connected devices.

Reactions on social media and news websites were mixed. Some applauded the arrival of another forum that offers users a seemingly more relaxed setting. Others pointedly questioned why, at a time when social media companies like Twitter and Facebook are facing controversy over their role in the dissemination of misinformation and hateful or dangerous messages, Twitter would offer a service that lessens users’ accountability.

Besides disappearing after 24 hours, there are other things that separate Fleets from regular Tweets. Notably, other users will not be able to “Like,” retweet or reply publicly to your fleets — which, of course, seems to run contrary what social media sites were created for in the first place. Yet, Twitter says there is a point — and a need — for this kind of ephemeral messaging.

“Twitter’s purpose is to serve the public conversation — it’s where you go to see what’s happening and talk about it,” Twitter’s Joshua Harris and Sam Haveson wrote on a company blog post introducing Fleets. “But 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.”

“We’ve been working on a lower pressure way for people to talk about what’s happening,” they added.

Twitter says it tested the service in Brazil, Italy, India and South Korea before rolling it out in the U.S. on Tuesday.