YouTube has started a renewed effort to integrate direct messaging into its platform. According to a support page, the service has started testing DMs as a way for users to share and discuss videos. The test is for users aged 18 and up in Ireland and Poland. But while a DM usually comes with some expectation of privacy, Google noted that "messages may be reviewed to ensure they follow our Community Guidelines."
This isn't the video platform's first attempt to provide a messaging angle. YouTube added DMs to its app in 2017, then removed the feature in 2019 in order to emphasize public conversations in comments sections. The new test for sharing within YouTube's ecosystem won't mean any change to other ways you might send people videos. Re-introducing the same system six years after cutting it seems like an odd choice, but Google claims this is "a top feature request," so maybe it'll get a broader adoption this time around.