Just what I've been waiting for. Rated 5 out of 5 stars

You rock!
I really appreciate this extension especially since PageShortcuts and Liink Pad have not been updated.
I use the Multirow Bookmarks Toolbar and I often have several rows of bookmarks filled with mostly temporary or single use bookmarks so this will be a great help to me.

Thanks.

P.S. Keep an eye out for an e-mail from me (so that you don't mark it as junk), I'd like to offer some samples of replacement icons for your toolbar button.

This review is for a previous version of the add-on (0.5.2).