Authors retain copyright over their submissions, except that implicit
in submitting a paper for the conference is the granting by the author
to the conference of the right to publish the paper in the conference
proceedings.  That is, in actual fact, the main and overwhelming
reason that authors submit papers.  We exercise that right by putting
the paper on the conference proceedings web site and cdrom.  We also
assert a "collection copyright" on the collection of papers, but we
are happy to have others making a copy of a paper for almost any
purpose.  We do not derive any secondary income from it.

We also publish "handouts" provided by the author, mainly in the form
of PowerPoint slides used by the author, and sent to us for inclusion
in the conference proceedings.  The same rules would apply.

If for example an ISECON paper were to also appear in an anthology or
book of readings, we would have no objection, but would of course
expect a proper citation such as "reprinted from ISECON 2004, section
nnnn" and that the paper be largely identical to what we published.

An author could certainly feel free to post a copy of his or her paper
on his or her own website as well.

There is the ethical question of publishing the same paper in more
than one venue, and then claiming both publications on one's vitae as
though they were distinct; the relationship should be clearly
identified as "first appeared in ISECON 2004" or some such notation.

Don Colton, Editor, ISECON 2004 Proceedings