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.