1. Follow up new signups immediately with a Welcome email and a sample newsletter. Consider using an auto-responder to send an email to new subscribers, informing them of your content and your promotions.
2. Provide newsletter content that is valuable and worth forwarding and
linking back to.
3. Archive your newsletter on your website so bloggers, Tweeters, and other social networkers can link back to your content, spreading it virally.
4. Make sure to read the Terms of Use before promoting your content on any website.
5. Invite readers to follow you on Twitter and Facebook from your newsletter.