This article will focus on how two different metadata harvesters—OAIster and the Online Computer Library Center's (OCLC) WorldCat—transform and present Dublin Core metadata extracted from CONTENTdm. It offers an examination, in plain language, of what two service providers do to metadata once they are harvested, and, in a case study, shows examples of how specific records display in both the local and aggregated interfaces. By helping metadata creators understand what happens to their metadata as it is harvested and transformed, this article aims to assist them in designing their metadata to be intelligible and useful to end-users across platforms.