ACM
The Proceedings of Hypertext 2001 are still not available from the ACM, apparently because of a technical copyright issue involving short papers which lacked an individual copyright notice.
The deadline for Hypertext 2002 is approaching swiftly.
The ACM exists to advance knowledge, not to hoard copyrights. If Hypertext 2002 papers cannot build on the results reported at Hypertext 2001, the ACM will have broken faith with its members, betrayed those who participated in the conference, and damaged the growth of the field and the ideals to which it once was dedicated.