The amount of bookmarks increases with time. Most users add bookmarks regularly from time to time but do not delete them if they are not needed anymore or if the websites ceased to exist. One of the main reasons for this is that most web browsers do not provide the tools to check bookmarks effectively. [...]
Check Firefox Bookmarks
Up until recently there was not a single add-on available for the Mozilla Firefox 3 web browser that would check the bookmarks for invalid or duplicate entries. Several add-ons existed that were able to perform the checks in Firefox 2. The reason for the missing add-ons was a change in the storage location for Firefox [...]
