places.frecency.[type]VisitBonus [Integer] - As of Firefox 3, the Address Bar, also dubbed the Awesome Bar, provides much greater functionality. Part of this is the ability to provide a drop-down set of search results whenever a word is entered in the Address Bar. These results are based on a search through your bookmarks, history and tags, and the way in which they are ordered is based on a combination of both frequency of use, and recency of use - hence the term 'frecency'. The preferences starting with places.frecency contain the parameters used to calculate the weighting and prominence given to the search results. VisitBonus equates to the extra percentage bonus given to certain location types. While you can experiment with these to see if you can improve the order of search results based on your particular tastes, I recommend noting down the default values first before making any changes. New to Firefox 3
places.frecency.updateIdleTime [Integer] - Firefox undertakes the detailed calculation of frecency (see above) while your browser is idle. By default Firefox waits 1 minute (a value of 60000 milliseconds) before starting calculations; a value of 0 disables all frecency calculations (which is not recommended); and other values change the idle time before calculations start. New to Firefox 3