3. The site queries my WebFinger entry, looking for an link relation matching my request. So, if I clicked "Like", then the server looks for a relation like: "https://w3id.org/fep/3b86/Like"
4. The server replaces necessary tokens in the link and forwards the user to that URL. For our "Like" example, it would be to a page on Mastodon where I could submit the "Like"
5. "on-success" and "on-cancel" values complete the process, closing pop-ups, or returning to the original page