I love this idea, but who decides what "spam" is? There's a lot of spam I get that I don't like, but isn't much different than other marketing efforts. It's not

I love this idea, but who decides what "spam" is? There's a lot of spam I get that I don't like, but isn't much different than other marketing efforts. It's not all V1agr4 emails and 419 scams. IMHO this is akin to the "pornography" issue. What is "pornography"? "I know it when I see it".