Nice, I guess the note works like a context for that identity, if you wanted to be serious about "isolating" them to protect yourself.

I meant more in the sense of the "strategy" and boundaries for each identity, assuming you would reuse nyms across different sites.

cyphercosmo

With a password manager? Nothing fancy. I have a ton of different phone numbers, email addresses, physical mailboxes, etc. Each identity has its own encrypted note with all of the relevant contact details.