Presented at the IAALD-AFITA-WCCA Conference held in Atsugi (Japan) in August 2008. The WebRing concept has evolved in the meantime and the resulting service is the CIARD RING, available at: http://ring.ciard.net A more up-to-date presentation is available here: http://www.slideshare.net/valeriap/the-ciard-ring-an-infrastructure-for-interoperability-of-agricultural-research-information-services