How To Enable RSS Feeds Feature In Safari 6 On OS X Lion / Mountain Lion

Step 1: Open up Safari, click on the Safari menu button and then select About Safari. If the version number is returned as Safari 6 as shown in the screenshot below then proceed to step 2.
Step 2: Download the Subscribe To Feed Safari extension by Daniel Jalkut by clicking this link
Step 3: Locate the downloaded Safari extension, open it and when prompted; select Install.
Step 4: When the extension has been installed, a new RSS button will be present on the left hand side of the search field. If no RSS or Atom feed is detected on the website then the button will be greyed out. If the visited site has a RSS or Atom feed then the feed:// link will be opened up in the default feed reader app on your Mac.