The Garbage Discography provides a number of RSS feeds that you can now subscribe to. These are all listed below.
The Garbage Discography suggests using FireFox, Opera, Netscape or Safari (Mac) for your browser to receive feeds from the whole of the Garbage Discography site where RSS feeds are available. Mozilla Thunderbird would be the recommended email client.
Standalone RSS readers that are suggested for the PC are News Crawler, News Gator & Awasu while News Fire RSS & Net News Wire are recomended for Mac users. There are also some web based services from the likes of Bloglines, Yahoo and Net Gator that you can sign up with.
You can find out more information from the RSS entry in Wikipedia.