This is a very neat add-on. It avoids the clutter of putting a lot on the bookmarks toolbar or having the sidebar visible all the time. Just a simple menu with all the needed folders works very well for this. One thing that might make this better is more customization. I would love to see this grow and maybe have different views and sizes. I also use a speed dial add-on that uses large size bookmark thumbnails, so I guess I'm just used to having large icons. But a bookmark menu is something I think browsers should implement. Nice work.