This chapter demonstrates that research into online gambling addiction, online gaming addiction, and (even more recently) online social networking addiction has proliferated over the last few years. These three online addictions were found to have negative consequences, that allow for the behavior to be classified as pathological as based on established clinical standards. It has been claimed that remote types of gambling have provided the biggest cultural shift in gambling in the past decade and that the introduction of internet gambling has the potential to lead to increased levels of problematic gambling behavior. There are now an increasingly growing number of studies on internet gambling that range widely in focus and methodological scope. Research into addiction to the internet (rather than addictions on the internet) suggests that it does indeed exist but that it affects only a very small minority of users.