Mozilla Bug: Site Navigation toolbar: support for RSS links

[Aaron Swartz <aswartz@swartzfam.com>]

Thought you guys would find this interesting.
  - Aaron

http://bugzilla.mozilla.org/show_bug.cgi?id=104708

There are bugs (e.g., 666054) regarding full-blown RSS support 
in Mozilla. It
would also be good to have a means of identifying when a page 
has a RSS feed
available, and passing the feed URI to their aggregator when 
they click a button
- whether their aggregator is integrated into Mozilla, another 
program on the
local machine, or a URI-addressable service.

This could be activated by:
  1) allowing the user to select an RSS aggregator (either on 
the local machine
or     on the network) in preferences.
  2) identifying RSS feeds through a LINK tag;
     <LINK rel="rss" href="http://www.example.com/feed.rss"; 
title="My feed"/>
  3) when this LINK is encountered, populating a link in the 
site navigation toolbar
  4) when the link is activated, sending the URI to the selected 
aggregator.