How often do you update your site and add new content useful to your readers? Except for one site that I update daily, I update each site every week. That means that every day of the week I have several sites that need to be updated. Providing fresh content brings in more traffic.
I also let the social sites know that I have added new content, Twitter, Facebook, Linkedin, Google+, MySpace and Digg.
I wrote a tutorial at WAU: 10 Ways to Increase Traffic on Your Web Site.
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