It seems to be a lost cause to get people to use BCC instead of CC. Because the same ones who are unable to figure out that the piece they're forwarding is a spoof or is really old news are the same ones who can't remember how to do anything but hit "forward" and "Carbon copy." Don't get me wrong--some of these folks are my very good friends, but I try to give them as little opportunity as possible to send me that kind of stuff. Mostly I've set it up so my personal email from email-savvy folks comes to one address, and the email from folks who haven't figured it out goes to another. And that's the one I go to in its online form first and weed out the spam before I click on my desktop icon to load it into the resident email program. It is a system, and it does tend to work as I planned, but it would take too long to try to explain the logic behind it. Suffice to say that multiple addresses, as long as there aren't TOO many multiples, can be useful.
Email used to be enjoyable, and everything that arrived in my box was meant to be there and was sent by people I knew (or expected to hear from, as in discussion lists). I miss those days, because that was also when the humor posts were able to travel freely. Now I wince whenever I receive most of them.