My beta-quality, more-or-less unsupported Subscribe to Feed extension adds a handy button to the toolbar that, when a page offers RSS or Atom feeds, can be clicked to easily open the feed:// link, which should automatically open your favorite news reader.
I hope this extension fills a void for those of you missing the beloved RSS button from Safari 5 and earlier.
What's new in this version:
- New toolbar icon with Retina display support
- Support for multiple feeds on a page, selectable from a popup menu
- Convert from http:// to feed:// for faster, streamlined subscription process
- Expand the list of MIME types recognized as valid feeds to cover edge cases