An infinite number of thank-yous to the Daily Dot, which has shed light on an iPhone app that allows you to digitally "Hodor!" your friends. It is called "Yo, Hodor," and it is inspired by a very popular, very maligned app called "Yo" that does the same thing, but with the word yo. If you're asking yourself just how could this be a real thing, let me reassure you that you are not alone in asking yourself this. But as far as the usefulness of social networks go, "Yo, Hodor" is pretty much the most useful one out there.