I found a mozillazine thread confirming it was removed in fx19 . It actually surprised me I had not noticed this as I thought I used it fairly frequently. * ''Smart folders,what happened?'' <br /> http://forums.mozillazine.org/viewtopic.php?f=23&t=2620379 Reading that thread and other information I get the impression this is part of some greater development plan that I presume will involve the Android and Firefox OS versions. It even seems likely that at some future date this or a similar feature will be re introduced. Meanwhile the above linked thread mentions''' this addon to get the option back''' * https://addons.mozilla.org/en-US/firefox/addon/savedsearchbutton/ * and even the option to manually create such bookmarks https://developer.mozilla.org/en-US/docs/Places_query_URIs