Twitter has started testing a new CoTweets feature that lets users co-author tweets, the social media giant confirmed to TechCrunch. Select accounts in the U.S., Canada and Korea now have access to the feature. The company says its testing CoTweets for a limited time to learn how people will use the feature.

Were continuing to explore new ways for people to collaborate on Twitter, a spokesperson for Twitter said. Were testing CoTweets for a limited time to learn how people and brands may use this feature to grow and reach new audiences, and strengthen their collaborations with other accounts.

Users who have access to CoTweets are seeing the feature appear in the tweet composer via a pop-up that invites them to tweet together with CoTweets. Twitter notes that you can invite another account to share ownership of a tweet with you. If they accept, a CoTweet will be created showing both of you as co-authors. If you select someone to share ownership of a tweet with you, theyll receive a request that they can choose to either accept or decline. You can send CoTweet invites to people that follow you and have public accounts. In addition, since only two authors can appear on a CoTweets header at once, you can only invite one co-author per CoTweet.

Twitter says if you received and accepted a CoTweet invitation and later change your mind about wanting to be a co-author of that CoTweet, you can revoke the CoTweet once its published. The CoTweet will then become a regular tweet by the original author.

Considering that Twitter says its testing the feature for a limited time, its clear that the company wants to see how people use CoTweets and then tweak and refine the feature before officially rolling it out to all users. Twitter says that at the end of this experiment, it may turn off the feature and any CoTweets that were created may be removed.