Google Reader has added a new feature called "Note in Reader" that lets you share any item from the Web, not just RSS feed content.
To share something, all you need to is is drag this bookmarklet to your bookmarks to get started.
Like Google Reader Shared Items, these new posts get rolled up onto a single page, which anyone can subscribe to. In addition, you can add notes, but it's not clear if these are searchable.
The new feature is similar to what Facebook, Friendfeed and others offer and moves Google Reader one step closer to being a social net for shared content.
UPDATE: The official word from the Google Reader team.
