Applications that support and enable electronic business depend on XML schemas to define the rules of both the application and the data. The last year has seen rapid growth in groups developing such schemas--for horizontal applications, e.g., ebXML core business documents, as well as for vertical industries, e.g., the Open Travel Alliance, RosettaNet, etc. Simply to develop, agree upon and make these schemas available to a specific constituency, however, is not sufficient. It is often equally vital that potential members—those outside the target group--be able to access schemas. As discussed by Robin Cover in his white paper, “Managing Names and Ontologies: An XML Registry and Repository,” (http://www.oasis-open.org/html/registry_and_repository.html), there are a number of issues that must be addressed to ensure the success of both the schemas and the applications they support.