Gets the basic job done, but is quite rough around the edges. Some options are in the addons page and some are in the speeddial page only, with no clear organization. The default user experience is below average, and you'll have to fiddle with the CSS to have it approach being palatable.

The Reload Dial Images button loads the pages in the current group one by one (is there no way now to do it in the background like the old Speed Dial addon did?); the addon doesn't have any option to stop or cancel this process once it gets going, even if you clicked it accidentally.

Overall, I very much like the idea of having my Speeddial URLs being just a part of my Bookmarks, but this implementation needs a lot more polish before it moves from "annoying inferior substitute" to a nice new addon of its own.