RSS is a Really Simple Syndication method (winkwink) that allows you to get automatic updates for the goings on of certain sites. This allows you to stay up to date with potentially hundreds of sites all from one place using services like google reader (
http://google.com/reader)
Anyway, this is useful because you can watch for updates on tons of great sites, using RSS feed links like these:
College Vegan
crxMPG - Gas mileage never looked so good
EcoModder Blog
http://feeds.feedburner.com/Ecomodde...elEconomyForum
EcoRenovator.org