Content Syndicators
www.isyndicate.com
www.screamingmedia.com
www.yellowbrix.com
www.moreover.com
www.infospace.com

My Netscape Network and RSS 0.91
my.netscape.com/publish
my.netscape.com/publish/help/mnn20/quickstart.html

IDEAlliance
www.idealliance.org/ice

RDF Model and Syntax
www.w3.org/TR/REC-rdf-syntax

Screen-Scrapers and Function Aggregators
www.octopus.com
www.yodlee.com
www.quickbrowse.com

Slashdot
slashdot.org/ultramode.txt
slashdot.org/slashdot.xml
slashdot.org/slashdot.rdf

Vignette
www.vignette.com

ICE Spec
www.w3.orgTR/NOTE-ice.html