When processing an item in your in list the first question you need to ask is: is it actionable?—in other words, do you need to do something? If the answer is NO, you either throw it away if you no longer need it, keep it as reference material (“I will probably need this article again some day…”), add it to a some day/maybe list (for things like “learn Indonesian”), or incubate it. Wait, what‽ Sit on it? Yes, sort of. If it’s something that you want to remind yourself about later (“I really didn’t understand this article, I should have a look at it again in two weeks”) it should go into your calendar or your tickler file which will soon be explained. (Yes, even the weird name.)