There's Freenet (http://freenet.sourceforge.net/). It's pretty much what you describe, except that it isn't actually designed as a backup system, but as a truly anonymous replacement for the WWW. Everything you post on Freenet is potentially accessible to anyone though, which may not be what you want.
Google came back with some other options too: Unison (http://www.cis.upenn.edu/~bcpierce/unison/index.html), MMB (http://www.pensamos.com/mmb/) and Grouper (http://www.grouper.com/about/what.aspx).
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krja
(no subject)
Date: 2005-04-04 07:36 am (UTC)Google came back with some other options too: Unison (http://www.cis.upenn.edu/~bcpierce/unison/index.html), MMB (http://www.pensamos.com/mmb/) and Grouper (http://www.grouper.com/about/what.aspx).