We're setting up something private for sharing documents.
Thanks!
iPaper is an unusually complex Flash application with many highly technical components.
http://www.scribd.com/jobs/7
So it looks proprietary.
For doc and other formats, one can use openoffice commandline tools to convert them all to pdf.
edit: Some history - http://news.cnet.com/8301-17939_109-9874527-2.html Scribd initially used the now discontinued flash paper.