A colleague has introduced me to FeedYes, a service that will create an RSS feed for your site, or indeed for sites you wish had one. Very useful for people running an indie news service who don’t have the time to get to grips with XML.
Clarification: this service is most useful for sites with no RSS or XML component at all. If you run a blog, for instance, most blog services include XML feeds by default, so you shouldn’t need this.
Online Journalism Blog 
Why not use FeedBurner instead? (http://feedburner.com/) What I like best about it is that when someone clicks the FeedBurner icon on my blog, they get a human-readable subscribe option and NOT a scary XML document, raw.
FeedBurner only seems to work for sites which already have an XML feed – FeedYes creates RSS feeds for pages which don’t have an XML link at all.