I personally remind people almost daily to get one but sometimes it just doesn’t work – you have to have something there right for them to review!
So that’s that! It simply adds a line below the Submit Comment button to get that Gravatar.
Of course the reason you’d want them to do this is to visually identify your commenters as well as increase social engagement (like via JetPack WordPress Plugin).
Download it here!
Let me know if you have any questions!