Usenix Conference Proceedings Free

Usenix is opening up:

All online conference proceedings are now freely available to everyone. This significant decision will allow universal access to some of the most important technical research in advanced computing. In making this move USENIX is setting the standard for open access to information, an essential part of its mission.

As far as I can tell, though, this is not free as in freedom, just free as in beer:

The Proceedings are published as a collective work, © 2008 by the USENIX Association. All Rights Reserved. Rights to individual papers remain with the author or the author's employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes.

(Via TechDirt.)