Some networks, like Twitter, treat hyperlinks a little better. Others, insecure social services, are far more paranoid. Instagram — owned by Facebook — doesn’t allow its audiences to leave whatsoever. You can put up a web address alongside your photos, but it won’t go anywhere. Lots of people start their daily online routine in these cul de sacs of social media, and their journeys end there. Many don’t even realize that they’re using the Internet’s infrastructure when they like an Instagram photograph or leave a comment on a friend’s Facebook video. It’s just an app.