XRIs are a new kind of identifier on the Internet, similar to URLs or e-mail addresses. However, a single XRI can be used for different services, such as a website, e-mail, skype, icq or any other. They are therefore neither website nor e-mail addresses a
M. Vasirani, and S. Ossowski. Auctions, Market Mechanisms, and Their Applications: Second International ICST Conference, AMMA 2011, New York, NY, USA, volume 80 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer, Heidelberg, (2012)