Protocol for Web Description Resources (POWDER): Primer

POWDER — Protocol for Web Description Resources — provides a mechanism to describe and discover web resources and helps the users to make a decision whether the resource is of interest. There are a variety of use cases: from providing a better means to describing web resources and creating trustmarks to aiding in content discovery, child protection and semantic web searches. There are two varieties of POWDER: a complex, semantically rich variety, called POWDER-S, and a much simpler version, just called POWDER, which is intended as the primary transport mechanism for Description Resources. POWDER-S can be generated automatically from POWDER.