When someone posts a link in their comment, there are no options to copy, share, or sometimes even just view the link (I've seen this on some images that it just opens right away on a comment without even asking me, which seems a little too zealous for my taste). This is immensely useful when I don't necessarily want to open a link in the client (I.e. copy and paste to share it or maybe I want to open it in a different app). When a user long-hold presses on a link, you should get options on how to handle it. Some possible interactions are copy, share, and open in external app