Striking back
I've found much delight in replying to email "opportunities" from the son of the Premier of Zambonia or the widow of the King of Zantolia by expressing a strong desire to work with them, and offering to meet with them in person on my next trip to Africa (which happens to always be in a few days). I can feel the spammer/scammer on the other end of the email drooling, and they always politely decline an in-person visit. And suddenly, my inbox is filled with more spam from all their spambuddies.
I regret to be filling the internet w/more spam (I string them on as long as I can), but I hope my efforts keep them from snagging a few naive/unsuspecting victims in the process. Perhaps if we ALL played along with them they'd be overwhelmed and quit.