Both IE7 and Firefox 3 are embedded RSS on page aware, meaning that in order to improve user usability they provide a one click RSS subscribe button.
Here is how it looks like :
- IE7 when enabled (from cnn.com)
- Firfox enabled
- IE7 not enabled (from bbc.com)
- Firefox not enabled
Now you ask , what makes these nice buttons to be enabled or disabled. It's pretty simple, it is basically just a <link> directive placed within the <head><head/> section of the page.
here is a simple example
<link rel="alternate" type="application/rss+xml" title="Roiy Zysman's Blog" href="http://feeds.feedburner.com/zroiy">