I use Google Reader for feed reading and del.icio.us for bookmarking. When ever i found an interesting article in feeds i usually open it and bookmark it to del.icio.us. Though this is not time consuming i prefer an option to send bookmarks directly from Google Reader to del.icio.us.
Google Reader + del.icio.us is a grease monkey script that does exactly the same. It allows you to send the bookmark in one click to del.icio.us.
Install the grease monkey script and open Google Reader, close Google reader if you are already using it. Now click on any feed article you will see the button Add to del.icio.us, a small popup will open, add tags, description here and click save. You need to login for the first time during a session. was thinking about an easy way to send bookmarks to del.icio.us from Google Reader.