Comment by krschultz

From the other direction, I use one email address for public facing stuff and one for actual emails. So for me the email address Facebook has is actually worthless to me and the email address other people have for me in their Gmail accounts is hugely valuable to me.

Honestly I could care less if the email address used for Facebook is publicly posted and I get spammed from every penis enlargement pill salesmen on the planet, I never read it.

When my actual Gmail address gets passed to Facebook by someone who joined and imported their contact list, and then they email me, I find it to be far more of an invasion of privacy.