One of the features Apple chose to kill off in Mountain Lion is the RSS Subscribe button in Safari. While RSS feeds aren’t quite the rage they used to be, many users still use RSS feeds religiously. The king of RSS Readers is of course Google Reader. And if you miss the subscribe button, there’s an easy way to get it back.
Add to Google Reader Safari Extension adds the RSS feed of the page you’re currently on to Google Reader. It works extremely well!
Another extension that works with any RSS reader you have installed is Subscribe to Feed, a side-project by Red Sweater software, maker of the MarsEdit blog editor.