You thought that you had only one facebook password , but interestingly you can log into your facebook account using three passwords . The one is the main password that you created and others are generated by changing the case of characters of your original password.
Lets take an example : If your facebook password is abcd@Efg , you can convert the uppercase characters to lowercase ( and vice-versa ) and the new password ABCD@eFG will also get you into facebook .
There is one other way also , if the first character of your password is small case , just change the character to upper case - like Abcd@Efg and facebook will let you in.
Thus if you have accidentally enabled CAPS LOCK on keyboard , your password will still work .
