So my sister is a senior and she is obsessed with facebook (ya i know). Her computer is a really old dell so she always goes on mine and signs on to facebook, yahoo, and other sites when she says she needs to do "work". It's kinda annoying whenever i go on and i have to sign back on. Is there any way to make a password for certain sites or make a password for safari? I tinkered with keychains but that didn't do anything.