As a lawyer, I spend a lot of time thinking about proportionality: what information is actually necessary for a particular purpose, and what gets collected simply because it is convenient. A one-off call often turns into an exchange of names, personal numbers, email addresses, profiles, and contact records that may outlast the reason for speaking.
That feels like an area where temporary communication deserves more attention. PapaCall (https://papacall.me) is one concrete example that prompted me to think about the category, but the broader question is bigger than any one service: can people communicate for a limited purpose without automatically creating a durable identity and relationship in multiple systems?
Privacy is not only about hiding wrongdoing. Sometimes it is about keeping an ordinary interaction ordinary. How much personal information should be considered a fair price for being reachable in modern online communication?