<a href="http://www.mozilla.org/products/firebird">Firebird</a> lets you export your bookmarks to a file so that you have them saved forever. <a href="http://www.mozilla.org/products/firebird">Firebird</a> has nice little buttons which clear your privacy information, passwords, history, cache, cookies, autocomplete, etc. <a href="http://www.mozilla.org/products/firebird">Firebird</a> has one little button to delete all that crap at once.