You must always encrypt your address. That's not Pine's opinion. It's more in the nature of a scientific fact than an opinion.As for other things such as messages containing non-identifiable information, it is your judgement call.I encrypt some messages I consider sensitive and not others such as "Hi". Read the following carefully:You should assume that every single thing you don't PGP Encrypt/Decrypt on this website and SR is completely public.That is our threat model. We assume everything is hacked already. If you think this way you won't make mistakes that will leave you awake at night.