Instagram today is introducing Threads, a messaging app designed to be used only by your closest friends. The app’s existence, which The Verge first uncovered in August, is a companion for Instagram that lets you quickly share text, photos, and videos with your “close friends” list. It also invites constant, passive sharing of your location, status, and other intimate data, which both invites privacy concerns and causes some people to reconsider how they’re using that close friends list.
