One of the biggest effects of Web 2.0 and the evolution of the social Web is the commoditization of data. The emergence of applications such as Facebook and Twitter, have lowered the barrier to entry for users to create and share resources. This openness in data sharing has also heightened issues of privacy, attribution, and copyright, thus making it important to track the provenance of social data. In this paper, we outline provenance aspects of social Web resources, and discuss key challenges in collecting and analyzing this information in the context of engineering, privacy, and monetization.