I remember something tangentially similar from a long time ago. I used to use a bookmarklet that would act as a kind of password manager, by generating a uniqu

I remember something tangentially similar from a long time ago. I used to use a bookmarklet that would act as a kind of password manager, by generating a unique password for each service based on the domain name and some user input as a seed. So you just have to remember a single “password” that gets added to the seed, and which never actually leaves your computer. Edit: nothing to do with spam or even emails really, but here it is: http://www.angel.net/~nic/passwd.sha1.html http://www.angel.net/~nic/passwd.sha1.html