ABSTRACT: The need for structured metadata to support ubiquitous access across the Web to the treasure troves of resources spanning cultures, in science, and in the digital humanities is now common knowledge among information systems designers and implementers. Structured metadata expressed through languages of description make it possible for us to 'speak' about the contents of our treasure troves. But, like all human languages, our languages of description both enable and isolate. The push to break out of the isolation of the metadata silos in which professionals inevitably design, implement and manage metadata in order to discover the intersections of our treasure troves drives much of today's discourse and emerging practice in metadata. The emergence of massively integrated Web presences such as Europeana and the Digital Public Library of America (DPLA) along with the reshaping of public access globally through mechanisms such as Linked Data and schema.org drive our conversations, our excitement, and our fears.