I've developed a system (kept only in my head) where every password I use is based off on the name of the service. This means that with just one of my passwords, you're most likely not getting anywhere. With two, you have a bigger chance of figuring out the differences and thus the system, but it works fine for me at the moment.
Don't underestimate me. It contains many numbers extracted from the letters according to various rules (order in alphabet, backwards, etc), along with special characters.
