With so many websites that require registrations and logging in, you are bound to have numerous usernames and passwords. That's okay because because people are assured of secure transactions most of the time but remembering all those online passwords can be quite a challenge. Honestly, I don't write down my passwords. I just try to store them in my memory. If I have no choice and am given a difficult to remember code, I write it on Notepad. Not a good idea I know but it's the most convenient way for me.