XKCD: Password Strength. Inspired by this ingenious explanation, thought about changing my password to something with lots of letters, but no upper case or numbers. Google+ told me the password was strong! Facebook told me the same password was weak.  Algorithm fail, facebook?
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XKCD: Password Strength.

Inspired by this ingenious explanation, thought about changing my password to something with lots of letters, but no upper case or numbers. Google+ told me the password was strong! Facebook told me the same password was weak. 

Algorithm fail, facebook?