1. Offer visitor a free online utility. When you offer a utility that can solve problem, they will definitely visit your web site.
2. Offer a free affiliate program. When you offer people a free chance to make money they'll align to visit your web site.
3. Provide news article related to your site. Visitor need actual news on the topics they are interested in.
4. Offer your visitors a free community. Visitor like to have a site were they can have discussions with others on a specific subject.