[Osiris]

The new version of Opera introduced a so called Speed Dial feature which displays nine thumbnails of websites for fast access that have been selected by the user. The nine websites are displayed when the user opens a new blank tab or a new blank window and can be accessed by either clicking on the thumbnails or pressing the corresponding numbers (1-9).
The exact same feature is now available as a Firefox extension Speed Dial. Websites can be assigned to the nine spots by using the “Set as Speed Dial” entry in the Bookmarks menu. This is slightly more uncomfortable than in Opera where it is possible to click one of the nine spots and select an entry from the bookmarks.
The website has to be loaded first to be able to add it to one of the Speed Dial spots. Several options can be configured including where the Speed Dial bookmarks shall be shown. A website shown there can be loaded by clicking on it, pressing the number or by pressing CTRL + the number from any open tab.

I personally don’t think that this is an ultimate feature but it could be nice to have for some users especially those who use the feature in Opera and want to use it in Firefox as well. I will stick to my bookmarks toolbar for now which is just a bit faster in my opinion.