OK, it's a bit late for spring cleaning up North but not for my southern hemisphere readers. I find this utility handy for cleaning out obsolete favourites/bookmarks and AM-DeadLink is Freeware!
AM-DeadLink - Download FavIcons and detect dead links in your browser bookmarks
AM-DeadLink detects dead links and duplicates in browser bookmarks and text files. If a bookmark has become unavailable you can verify and delete it permanently. Additionally you can download FavIcons for all your Favorites and Bookmarks.
