I have nearly 300 passwords to different web sites, nearly all of which are randomly generated. I save them in a password manager, where they are encrypted. You'll note that at the bottom of his article, Schneier recommends using a program like this. If you Google "password manager" you'll find lots of alternatives.
My problem lies in reconciling my gross habits with my net income. -- Errol Flynn Any man who has $10,000 left when he dies is a failure. -- Errol Flynn