It's not humanly possible to remember 100+ everchanging passwords so you'd have to track them somewhere, then once the place you write them down is compromised all your passwords are. Isn't it better to remember (and keep changing) the two or three important passwords and reuse or nearly reuse the same password for the unimportant places? I mean ... I am registered on quite a few forums ... do I care someone might post something under my name on eg. PerlEnEspanol or one of the several database forums? Nope. Besides what would be the point? And what would be the harm? Most likely it would be just a silly "Fantomas was here" message.
Make sure your important passwords are safe and secure and don't sweat over the rest.
Jenda
Enoch was right!
Enjoy the last years of Rome.