[apitman]

I've been doing this for a few years and I think I've had a single organization use the email in a way I was surprised about (used car dealer gave it to Sirius radio and they spammed me). I get far more spam directly from orgs, which is annoying but expected, and they usually honor unsubscribes, so I've never blocked one of my addresses. At the end of the day I don't think it's been worth the effort, and I'm considering switching to a single public email address that I just expect to receive spam.