Very interesting.

Here is an idea: for saving space on my bookmarks bar, I often empty out the whole name of the bookmark and leave the favicon only: http://i.imgur.com/Na63dCS.png

Would be nice if search will count those (based on URL?) as well.

Also, when I hit ctrl+B then press enter to add it to a folder, if I press enter again it will add it again. I'd expect a toogle (add/remove) or at least one single add.