Setting up Feedburner RSS and Email subscription for your blog

"Most blogs have RSS feed which is detected automatically by commonly used feed readers when the blog URL is added to the reader.

However, if you want to make it more obvious and easier for readers to subscribe using RSS, or want to know exactly how many people subscribe to your blog then the best option is to add a Feedburner RSS feed and email subscription to your blog.

Feedburner is a free web service which enhances bloggers and podcasters ability to manage their RSS feeds and track usage of their subscribers. "

http://theedublogger.com/2010/01/26/setting-up-feedburner-rss-and-email-subscription-for-your-blog/