Wired: E-Marketers Rue Address Turnover

Thirty-one percent of Americans change e-mail addresses each year, in part to evade spammers, according to a new study — and it's costing legitimate businesses millions in potential sales.

A survey on e-mail churn found that merchants lose half of their online relationships with customers when those customers change e-mail addresses when they change jobs, switch ISPs or when their inboxes become too stuffed with spam.