Here is a pretty comprehensive list of Google Reader hacks…
For those who want more out of Google Reader and can’t wait, check out the hacks below; among some, search within Google Reader (yeah!) and read native blog posts.
I’ve listed a few hacks below, here’s the list.
Read native blog posts within Google Reader, no more limited by excerpt feeds as you can now read the actual page itself from within Google Reader…plus see and make comments right there within Google Reader.
You will see a preview button along the bottom of the RSS item:
eg. Add star, ShareEmail (Updated), Mark as read, Edit tags, Preview
Similar is a link to the Original article instead of having to click on the title.