Server. Cookies. Iptables. Your Passwords Aren't As Secure As You Think; Here's How to Fix That - Passwords - Lifehacker. I never used remember password option for almost anything.
I also reccomend it to anyone I saw using it not to as well. The safest way I think is just to have a different password for anything, but realistically that might even lock yourself out, so I have passwords set up in "levels. " For those really important things like online banking, or shopping, I have a common password for those that is pretty long, full of symbols, numbers, and letters of different sizes. Then for lesser items like forum passwords, I just use a simple password, throw in a couple numbers and symbols, but not as long, and totally unrelated to my other passwords. This way its easier to remember passwords, but still have security.
BlueProximity. OWASP Testing Guide v2 Table of Contents.