sections. Typically I'll check different sections on different days, and by the time I get back to the first section it's a hodgepodge of new posts, and posts that I've seen. Sometimes, I have to just clear the page whether I've checked the sections or not b/c the page is just too long. If I could clear as I check, it would save me a ton of scrolling.
Like a lot of internet users, I hate to scroll and I have a 4 second attention...who said what now?