2. Encourage your visitor to subscribe to your website by offering a free report or video training; it can be a discounts or special offer.
3. Add a link to your primary page for a rss feed or any other social bookmarking link so they can get updates automatically
4. Add a link "recommend this site to a friend" so that the visitor can email your site link with the pre-written title.
6. Brand your website with a friendly and attractive scheme so that your visitors always recognize when they are on your site's pages.
7. Never spam a visitor who has opted for newsletters with third party email. Honor their request if they decide to unsubscribe. They may change their and still come back if they like your products and opt in again.