I've heard it talked about, and I really don't agree with it. I don't think people are going to go for it either. How would a teenager pay for it? I know parents that wouldn't pay for their kid to have an email address. I don't think spam is really that big of a problem, but maybe that's because I'm on a school email server. The biggest thing to remember is to not post your email address anywhere in plain text, because web crawlers nab those very quickly. There are a lot of good programs out there for spam blocking.
I don't get that much spam, and when I do I almost always delete it right off the bat without thinking about it, its not reallly an issue for me.