How to tell if a bookmark already exists in Safari (v6.0.5) I find I often wrestle with the implementation of bookmarks in Safari.  Since I care to have my bookmarks simply and cleanly synchronized by iCloud, I continue to use the (inadequate) bookmark features of Safari.  My specific question is: Is there a way to tell if a site is already bookmarked?  I have 1000s of bookmarks, organized by folders.  It seems pretty straightforward for Safari to know when I hit CMD-D to initiate a bookmark that it already exists in my collection.  Am I missing this feature that is already implemented?
Safari has a bookmark search function in the top right corner of the bookmark menu window,

Just paste the new bookmark (or type first 3 letters) in to it and it will tell you if it already exist. 

It is also useful in finding bookmarks in a very large library.