Or just click the "Edit" button. I think it's intended (avoiding the need for some kind of auth).
Yup. For now that's all it takes. I wasn't really concerned preventing other people from editing a profile up until now. I liked how HN Notify allows anyone to opt-in or opt-out, so I copied that style. I figured HN would prefer it that way.
It is indeed simple to setup in a pleasant way, but there are plenty of trolls out there. Kudos nonetheless!
Thank you! Seems like enough people have expressed concern about the ability to edit any profile. I'll add something simple to lock a profile down soon.