Idea for "New Articles" drop down

When you click on the New Articles drop down on the homepage that shows you articles posted broken down by day, it would be great if you could mark articles read so that they don't appear highlighted and new.

If you go and read an article, it should no longer appear as a new article in that list, so the next time you come to the site you see how many articles are new since you last visited.

 

Hopefully an idea for The Verge 1.1