i picked up this tip from steve gibson's (and leo laporte) podcast, and i've been starting to implement it. think of a password algorythm, of sorts, that changes with each domain name. for instance, you could do:
first two letters of domain + birth year + remaining + address...so like:
go1979ogle150
ya1979hoo150
ms1979n150 (hahaha, sorry).
i thought it was a pretty good tip.