how do you make it so that the address bar in firefox doesn't remember your visited sites? i hate when friends use my computer and can see whose facebook i visit most when they go on my computer. i have the "clear private data" thing set up, but since i have a mac it's hard for me to remember to close out of firefox. the work computer i have has the same settings but the address bar doesn't remember any sites but the ones bookmarked. anyone know how to get this set up?