Are You Saving Articles On The Site? | Use the Star Button
Using two recent stories from the site, the one at the bottom has been Saved to your Account - just by clicking the Star icon, either on the home page brick, or within an article.
The article at the top has not been saved, and is somewhat greyer than the one below. Personally I am using this to get back to articles I keep referring to, by clicking My account, then the "Saved" tab.
You can also get rid of articles you don't want to see again by clicking the "X" button in the top right, these also appear within your account under "Hidden".
Try it out - sometimes getting to that key article is a hassle, and this speeds up the process nicely.