From our discussion list:
NISO and NFAIS have been running a project for a couple years to provide guidance to publishers on best practices for supplemental materials to articles. The technical recommendations have just been released for comment (from now through Sept 15th). It is a good opportunity to provide some FORCEful input and help ensure that these influential recommendations are compatible with where scholarly communication is headed.
Available from: http://www.niso.org/workrooms/supplemental