Twitter is experimenting with a new feature (Android only) that would ask users to read articles before posting a link. I like the idea and I have offered a similar recommendation for Facebook. With Facebook, I would like to see a feature that requires a personal statement to accompany any post rather than just sharing or adding a meme link.
I am mostly an Apple user so I won’t be able to try the new Twitter feature, but this isn’t the way I use Twitter anyway. I tend to share a link from the source to Twitter. When you share from the source, you have the document open in the first place. The Twitter idea of a request to read is a useful reminder, but there is unlikely a way to actually verify that a posted resource has been read.