On number four, I just want to add that answering some surveys, questionnaires, request for information etc… might also compromise your password. A lot of sites asks its users to enter their mother’s maiden name for the security question. Give that answer away or some other security answers (favorite teacher, childhood hero etc…) then you’ve compromised most of your internet accounts.

To be sure, don’t use the real maiden name of your mother when signing up.. instead create:
- a memorable “master security answer” for trusted sites (email, home banking) and
- a “disposable one” for not-so-trustworthy sites (warez download, pohrn, spare email etc..)
both of which should consist of capital and small letters, numbers, and special characters.