Wikipedia defines:

RSS (Really Simple Syndication) is a family of Web feed formats used to publish frequently updated content such as blog entries, news headlines, and podcasts. An RSS document (which is called a "feed" or "web feed" or "channel") contains either a summary of content from an associated web site or the full text. RSS makes it possible for people to keep up with web sites in an automated manner that can be piped into special programs or filtered displays.

I've been aware of RSS feeds for around eighteen months, but only took the initiative recently and started using a feed reader to deliver content that I'm interested in. I use Google Reader. It's the first reader I've tried, and I can't see any reason to change in the near future. Like most of Google's applications, it's presented in an intuitive, compact and customisable manner.

Click the RSS feed icon at the end of this sentence to view a screenshot of my RSS Reader page, with a few comments drawn onto the image.

The beauty of RSS Readers lies in the efficiency they allow the user. Instead of regularly visiting pages daily to check whether they've been updated - my incredibly inefficient tactic of old - RSS Readers display every page you're interested in within a single browser window, and allow you to read the content at your leisure.

Don't mistake this entry as an advertisement for Google Reader - if you use a better feed aggregator, I'm all ears.