http://webworkerdaily.com/2008/08/28/getting-delinquent-clie...
http://webworkerdaily.com/2009/09/11/tips-from-the-trenches-...
http://www.acuitydesigns.net/how-to-deal-with-non-paying-cli...
http://articles.sitepoint.com/article/7-great-rip-offs