"It used to be that the best way to protect yourself from being spammed was to be cagey with your e-mail address. ... At the Spam Roundtable, I learned that more and more spammers are resorting to dictionary attacks, where they send e-mail to any address that's likely to be valid. If the message gets through, that's great for the spammer. If the message bounces, the spammer doesn't care."