Yes that is a very good idea, also you can go the other way on certain sites, of your choosing, after creating the password for that site remove one character either from the first of the password, middle, end or where ever you feel is the one you want to remove. In the notes or where ever you like to store which character is removed save this number.
This is a little more confusing, but; for your important links like a bank account, stock market account or just to keep others lost as to what has happened.