I would rather not work somewhere where they both care what my political views are and would go behind my back to find out instead of just asking me. Likewise, if someone I date starts spying on me this way that's a no either way and I would rather know about it when they try to throw something in my face than unknowingly date a creep.

I do think there is a privacy issue, but I think it is rather minimal and as the sibling poster states, the email address is already exposed.