pa55w0rd
post it notes, general mistakes, easily guessed passwords, for email accounts that actually matter must be of greater concern than 599.9 billion accounts that nobody uses, havent set up, dont use for banking.. I mean if somebody wants 250 billion accounts worth of spam, links to fazebook, links to anycestory etc
this will really all only matter when biometrics become passwords, and you cant change your retina fast enough..