Although advertising has previously been under the control of organizations and their advertising agencies, recent advances in technology have seen the emergence of what has come to be known as ' consumer-generated advertising ' . Consumers are now creating their own ads for the brands they love and hate, using inexpensive software and powerful personal computers, and then distributing these via social networks such as YouTube. The consequences for traditional advertisers are profound. Although services marketing scholars have begun to pay attention to this phenomenon, little is known about the source effects of these types of ads, for example whether viewers think they were created by fi rms, or consumers like themselves. This article describes a series of experiments designed to test source effects in the context of consumer-generated ads in a fi nancial services context, in which it is found that some source effects are present. Implications for marketers as well as future research directions are identifi ed. Journal of Financial Services Marketing (2010) 15, 49 - 61. doi: 10.1057/fsm.2010.3