Yahoo now has just opened up new "dot" addresses to all Mail users. Now get an extra email address like
email@example.com or firstname.lastname@example.org or email@example.com.
It's absolutely free. Use it just as you would your primary address (which of course you can still use). To make things handy, even use one Inbox to send and receive messages to and from both addresses. But hurry, the good names are going fast!