Unless it has to do with money, use the same login for most of your accounts.
I use a standard password for every site which doesn't contain essential information. Those that have my credit card number, for instance, or can be used to charge stuff to my account, I use unique passwords which I write down. Bank accounts, however, get secure passwords.
I like the systems that remember passwords, until I got burned by Apple. They insist, when you first set it up, that the password "Is the same as your Apple ID, so you can access by logging in". However, that's a blatant lie! If you do the wrong thing, it'll ask you for your ID, you enter your Apple ID, but it's asking for the Apple ID five generations ago, or was it seven? They also have an option to "erase the password file", but after it deletes all your passwords, you informs you that you can't create a new one without knowing the master password, which no longer exists!
Always write your Apple password ID!!!
For my PC, I let Firefox remember my passwords, but I have a plug in which allows me to see the keywords (you click on the box with the encripted key, and it reveals the text version). That's a decent way to remember what your old passwords were.