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Google Reader's sharing feature is very cool, but it's limited to your subscriptions. If you find an interesting post and you want to share it with your friends without subscribing to the feed, Google Reader is not very helpful. On a closer look, you'll notice that Google Reader lets you preview any feed without subscribing to it if you go to this page:
http://www.google.com/reader/view/feed/FEED_URL
But it's not that easy to find the feed and build that URL every time you want to share a post. And even if you do that, you'll still have to find the post.
So I created a bookmarklet that automates the process: it finds the feed and creates a different URL that tells Google Reader to search for the page's title in that feed. Hopefully, the first result is the page you want to share.
Source (googlesystem.blogspot.com)
[Edit Javascript]
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javascript%3Avar%2520l%3Ddocument.getElementsByTagName%28%22link%22%29%3Bvar%2520href%3D%22%22%3Bfor%28i%3D0%3Bi%3Cl.length%3Bi++%29%7Btype%3Dl%5Bi%5D.getAttribute%28%22type%22%29%3Brel%3Dl%5Bi%5D.getAttribute%28%22rel%22%29%3Bif%28rel%26%26type%26%26rel%3D%3D%22alternate%22%26%26type.indexOf%28%22+xml%22%29%21%3D-1%29%7Bhref%3Dl%5Bi%5D.getAttribute%28%22href%22%29%3Bif%28href.indexOf%28%22http%22%29%21%3D0%29%7Bvar%2520k%3Dhref%3Bvar%2520loc%3Dwindow.document.location%3Bif%28href.indexOf%28%22/%22%29%21%3D0%29%7Bvar%2520j%3Dloc.pathname.split%28%22/%22%29%3Bj%5Bj.length-1%5D%3Dhref%3Bk%3Dj.join%28%22/%22%29%7Dhref%3Dloc.protocol+%22//%22+loc.hostname+href%3B%7Dbreak%3B%7D%7Dif%28href%21%3D%22%22%29%7Bvar%2520txt%3D%22%22%3Bif%28window.getSelection%29%7Btxt%3Dwindow.getSelection%28%29%3B%7Delse%2520if%28document.getSelection%29%7Btxt%3Ddocument.getSelection%28%29%3B%7Delse%2520if%28document.selection%29%7Btxt%3Ddocument.selection.createRange%28%29.text%3B%7D%3Bvar%2520query%3Bif%28txt%21%3D%22%22%29query%3Dtxt%3Belse%2520query%3Ddocument.title%3Bvar%2520gread%3D%22http%3A//www.google.com/reader/view/%23search/%22+query+%22//%22+encodeURIComponent%28%22feed/%22+href%29%3Bwindow.document.location%3Dgread%3B%7Delse%7Balert%28%22No%2520available%2520feed%21%22%29%3B%7D
google reader rss dhinesh hi hello how is it
hello
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