Got an email reply from the ACM folks: The issue here is copyright, not censorship. All of the author versions that were linked to on these pages are still ava

Got an email reply from the ACM folks: The issue here is copyright, not censorship. All of the author versions that were linked to on these pages are still available -- ACM explicitly grants individual authors the right to post their own versions of their papers on their own pages. All ACM bibliographic data, and tables of contents in the DL, are available without cost to anyone in the world. If you want the copy of a SIGGRAPH paper and an author has posted it, you can still access it without an ACM subscription. Also note there would be no problem with these pages if they linked to the ACM version of the papers. Other lists of papers, compilations that Ke-Sen Huang built (rather than copying the table of contents from a publication) are not affected. Furthermore, the SIGAsia2009 pages Ke-Sen Huang makes available are still there until the papers are available in the ACM DL in the interest of promoting the conference. The copyright issue that applies is described in this link: http://www.acm.org/publications/policies/copyright_policy#Links http://www.acm.org/publications/policies/copyright_policy#Li... " ACM treats links as citations (references to objects) rather than as incorporations (embedding of objects). Permission is not needed to create links to citations in The Portal (ACM Digital Library or Online Guide to Computing Literature). ACM encourages the widespread distribution of links to the definitive versions of its copyrighted works in the ACM Digital Library and does not require that authors obtain prior permission to include such links in their new works. However, someone who creates a work or a service whose pattern of links substantially duplicates a copyrighted work should get prior permission from the copyright holder. One example: the creator of "A Table of Contents for the Current Issue of TODS" -- consisting of citations and active links to author-versions of the works in the latest issue of TODS -- needs ACM permission because that creator is reproducing an ACM-copyrighted work. If all the links in the "Table of Contents" pointed to the ACM-held definitive versions, ACM would normally give permission because then the new work advertises an ACM work. To avoid misunderstandings, consult with ACM before duplicating an ACM work via links."