The size, scope and significance of Internet Social Media (ISM) services have grown exponentially in recent years. This paper discusses the context, methodology, findings, and conclusions from an exploratory study that assessed users’ preferences of ISM services. The study uses a mixed methods approach to explain why ISM services are liked or disliked by users. This is an important area for research since users are the most important stakeholders of any ISM service. The outcomes of this exploratory study were sets of rankings of ISM services that were based entirely on users' preferences. This has not been studied in prior research up to this point. As Internet social networks continue to grow in their popularity and usefulness, this study provides a better understanding of the preferences of ISM users that is valuable to both academia and practitioners. The ISM services that are compared in this study include Facebook, MySpace, Google Plus, LinkedIn, Twitter, YouTube, Groupon, Digg, Yelp, and Loopt.