skrp wrote:Why have both, considering RSS is a form of XML? Additionally, if I'm using awasu which one would I click on?
To confuse new users
RSS has had something of a chequered history and there are many different versions of it and a lot of political infighting between many of the people involved about which is better.
RDF performs the same function as RSS (syndicating content) and is considered a purer form, from a technical point of view, by some who care about such things.
Most aggregator developers, myself included, just throw their arms up in disgust and support all versions of RSS, RDF and Atom. Some web sites offer their feed in different versions in case you actually care. It doesn't matter which one you use.