Tim Bray wrote:
1. A new feed-level element <atom:alt-uri-prefix>, any number allowed. E.g.
<feed> <link>http://www.tbray.org/ongoing/</link> <alt-uri-prefix>http://www.tbray.org/</alt-uri-prefix> <alt-uri-prefix>http://tbray.org/</alt-uri-prefix> <alt-uri-prefix>http://www.textuality.com</alt-uri-prefix
Although this doesn't solve the DOS potential, I'd rather go for a new atom:source child element indicating the source feed's Id or URI. When PlanetBar and PlanetFoo republish a feed from Baz, they should "move" the entry metadata into an atom:source element. They'll then also add that new element (atom:feedid ? doh, yet another two-word name). When PubSub republish the entry, it preserves the atom:source content as-is, preserving the source feed's Id at the same time.
-- Thomas Broyer
