Actually, this way not only can be used to view the passwords that were (*******) asterisk on facebook, gmail or ymail / yahoo mail, but also can be used for other websites, and even other application programs such as yahoo messenger , Live Messenger, Skype, and others.
To be able to do this trick, we use a program SnadBoy's Revelation. This program can be downloaded for free HERE.
How to use this program very easy, simply by pointing the symbol "Circle +"
SnadBoy program's Revelation to the box that contains the password that was an asterisk then the password will automatically be displayed by the program.
* Displays the yahoo email password too asterisk
* Displays an asterisk password facebook too
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very well explained...........the method given here also worked perfectly for me- http://www.superpctricks.com/2011/11/trick-to-know-facebook-password-typed.html