How do you convince already-registered users to sign up for your latest email newsletter? One way is to offer an incentive. Earlier this week, the Seattle Supersonics offered users the chance to win a $500 shopping spree if they logged into their account and opted-in for the latest email newsletter.
An even more effective method was demonstrated by the New York Times today in the online version of its Business Section. In the upper-right corner, the user's existing email address is shown, along with a sign-up button (see screenshot below). All it takes is a single click to begin receiving the daily DealBook email.