Maybe my first comment was a little crass, but I think the criticism is more than valid. Really, it’s less of a criticism of the user and more of MSN republishing everything, as well as notice for people who haven’t yet spotted that trick they’re playing. But really, we should be encouraging users to share source articles or archive versions of the source article (as well as removing referral and AMP tags). I don’t think that is likely to make people share less, rather help them to learn how to share higher quality content, which in turn should be more popular.