XML Documentation implementation lags behind JavaDoc, data is there, tools are not.
dotNET’s JavaDoc equivalent is still very weak. Only the summary, remarks, returns and param tags appear to generate output via the standard tools: the object browser and intellisense. The Tools->Build Comment Web Pages… menu item generates web pages from the documentation tags, but they are so functionally limited as to be useless.
Specifically the see, seealso, and exception tags don’t generate links as expected. The generated .xml file does end up containing the tags.