IPSME allows for interoperability between virtual environments. In other prototypes, IPSME was applied to virtual worlds. In this Store-of-stores prototype, IPSME is used to inter-connnect third party stores into one universal interface. The dynamism of IPSME is used to allow for "plugins" to update the universal interface with support for more stores or a new interface look-and-feel. Plugins can also be created by third-parties and sold on the Store-of-stores, allowing for an industry of integrations between stores.