NoScript.
And, for a very long time, NoScript only.
(Following the principle "Less is more"; less things to go wrong, less things to keep updated, and I don't become completely handicapped if I have to work on a PC without "my tools").
But since more or less every person
(with some few exceptions seen here) who has add-ons installed, have or mention Adblock, or nowadays, Adblock Plus, I decided to try it. From my experience, and with my use of the web, I could cope quite well with a combination of NoScript and blocking some images with Fx.
Adblock Plus works fine so far, after some week; as with NoScript it can be a very simple "on or off" or using some more advanced settings/rules.
When you have a lot of bookmarks, sorted in different folders, it can sometimes be difficult to find where a certain bookmark is stored. You, Tony, earlier mentioned the "Locate in Bookmark Folders" add-on, and I used up to Fx 2.
However, it's not maintained any longer.
Then there was nothing, or no direct substitute for a small simple task like that, it seemed.
A temporary “workaroundâ€, with Fx 3 and onward has been to look in the "Add Bookmark pop-up", after I have navigated to an address, but it doesn't show the path to the folder in the Library, and with that "workaround" I have to visit the site... and that is so stupid that it shouldn't even be mentioned as a "workaround".
I know that this has been discussed over at Bugzilla, see this lengthy discussion (from 2003-2009!) here:
Search for bookmark should show parent folder.
As some said, the present solution is more like a filter.
There are some add-ons dealing with this (and working with the latest release):
The first one, Show Parent Folder, adds a column (or the possibility to add a column, "Parent Folder") in the Library. The second, Go Parent Folder, behave as "Locate in Bookmark Folders"; it can jump from a search result to the folder in the sidebar or the library. Quite nifty.
Without the above extensions the whole Library could be just one unsorted bookmarks folder.
Byelingual When you speak two languages but start losing vocabulary in both of them.