Previous version had an age rating of 12+.
Following the controversy surrounding its exposure of porn, Twitter's video-sharing app, Vine, has added an age rating for possible adult content.
The app for iOS allows users to create and share six-second clips, but pornography contributed towards a troubled launch. Twitter responded by blocking a series of porn-related search terms such as "#porn" in order to make it harder for users to find adult videos.
The social network has now released a new version that requires users to confirm that they are at least 17 years of age. The previous version had an age rating of 12+. The Vine update also delivers minor bug fixes, an option for reporting or blocking users, and the functionality to share a video to Facebook or Twitter after it's been posted.
The app caused controversy when a pornographic video briefly appeared on Vine's "Editor’s Pick" list, which subsequently caused Apple to retaliate. The update follows 500px returning to the iOS app store after being removed for allegedly allowing easy access to content related to nudity.