I don't know DaveM. I have my business email address that I don't put anywhere on the Internet. I get almost no spam to that account. Maybe one or two per week.
I have several other accounts that I use to register for different things, those obviously get much more spam...but I only check those when I feel like going through and deleting spam.
I will say this, I'd much rather have email spam than the shit that fills up my snail mail box. I only check that about twice a month...and sometimes it fills up and the freakin' mail man bundles it up and takes it back to the post office. That pisses me off. If that happens I won't get my mail for another month, because I HATE the Post Office. Lazy bastards work at the post office...no offense to any Post Office workers reading this

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