The RSS promise for end-users is simple:

• a unified one-stop-shop to consume online content, without having to visit dozens of sites every day to see what’s new and without having their online subscriptions interfere with their personal and business e-mail communications;
• complete control over their content consumption, including a quick, easy and reliable mechanism to unsubscribe from content they do not wish to receive;
• the ability to receive breaking news as it becomes available, without having to wait for a monthly, weekly or daily recap sent to their e-mail addresses;
• the certainty of actually receiving the content they want, without the fear of it being stopped by spam filters on the way;
• the ability to receive rich-media content directly to their desktops, including audio and video content;
• the promise of providing the tools to make their lives easier, including receiving critical content updates as soon as they become available.

These points are not simple enhancements, but important advancements that can fundamentally change how internet content is consumed. Furthermore, these points themselves prove why marketers need to start implementing RSS now!

To bring the point home, let us inspect some of the content services already powered by RSS.

Library Elf: Making The Library Experience Easier
Library Elf helps you keep track of your library accounts in one place and received reminders, such as what library material is due, overdue and ready for pickup. Library Elf uses the power of RSS to help you forget about your library accounts and instead be directly notified of the changes you’re waiting for, directly to your desktop.

Indeed: Helping Your Find The Right Job
 Flickr: Sharing Your Life In Picture
Flickr is the most popular photography management and sharing service on the web, enabling end-users to upload their photos and then make them available to their friends, associates and family through a wide assortment of content delivery channels, including RSS. By subscribing to individual Flickr feeds from their users, everyone can have direct access to the latest life experiences from their friends.

rssCalendar: Sharing Your Events
 Coupons.com: Savings To Your Desktop
 PubSub.com: Tracking The World
 RSSauction.com: Tracking Your Purchase Interests
If you’re a regular eBay user, you certainly want to keep track of new products available, which precisely match your interests. rssAuction.com helps users keep better track of eBay by giving them a tool to first create a comprehensive list of product requirements and then delivering the search result through an RSS feed. As soon as new products matching individual interests appear, the user is notified of that through his RSS aggregator, giving him the ability to start bidding immediately and without having to visit eBay every day to find the right products.

Keep reading here.