I use a few different addresses. My Yahoo address receives about 25 Junk Mail messages a day, but they are diverted into the Junk mail box.
I don't get many on my Bellsouth mail, and none on my new address that I got with the web site. I try to always use the Yahoo address when I'm dealing with anyone who might share my email information. And Yahoo DOES share, whether they are supposed to or not.
DonM