It's important to have new content on your site. For example, new articles every day or week draw in traffic. Alternately, consider commenting or a forum to have others create new content and new visits for you!

Content is very important, as well as updated content. A forum or comment box provides great interaction for your visitors which will entice them to return more often.

Forums are probably the best tool for interaction and you can get one for free.

Geoserv.