1. Ask visitors to subscribe to your e-zine. It's a good idea to also give them a freebie when they subscribe.
2. Have them sign-up to get access to download a free ebook. The subject of the ebook should be related to your target audience.
3. Give your visitors a free membership inside your member's only web site. Have them sign-up to receive a user name and password.
4. Hold a free contest or sweepstakes at your web site. Ask them to give you their contact information to enter.
5. Offer your visitors free consulting via e-mail. Have them fill out a web form to e-mail you with their questions.
6. Hold an interactive poll on your web site. Ask your visitors to e-mail you their vote or opinion.
7. Ask your visitors to sign-up for a chance to get a web site award. Have them e-mail you their contact and web site information.
8. Have visitors fill out a survey on your web site. Give them a free gift as an incentive to complete the form.
9. Offer a free online service from your web site. Have visitors fill out their contact information to sign-up to the free service.
10. Ask visitors to sign your guest book. Tell them they will get a free gift in return.
11. Offer a free affiliate program for your visitors. They will have to sign-up in order to receive marketing materials and commissions.
12. Allow visitors to submit a free classified ad on your web site. Require them to give a valid e-mail address in order to post an ad.
13. Give people who visit your web site a free course sent via autoresponder. Just ask them to fill out their contact information to receive the free course.
14. Offer your visitors free software to download. Have them sign-up to get an access code to unlock the software.