A tragedy feels so much more tragic when words like "Facebook" and "unfriended" make it into the story. This is why before approving a new friend request, we look at the profile photo and ask ourselves, "Is this dude going to going to make my death go viral because the phrase 'Superpoke Gone Wrong' will be in the headline?" There's no way to be sure, so go with your gut. Incidentally, if you feel you've been wronged on Facebook and aren't sure how to react, here is a handy chart to help you master the proper etiquette:

Sources: CBS News