The new version is said to allow profile picture changes within the app, make messaging easier and grant users the ability to flag spam and hide feed posts you don't want to see.

ENGADGET

The system also provides a mechanism for a user to selectively establish contact relationships or connections with other users, and to grant permissions for such other users to view personal information of the user.

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The Library of Congress has the ability to grant exemptions to the Digital Millennium Copyright Act, which it has done in the past for smartphone users who wished to unlock their phones.

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Dr Mazus argues that the grant is misdirected, and that only ex-users who can show they have kicked the habit should be treated.

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