On that topic, what password managers do people here use?
I use a really old, but still supported one, stores everything on my computer, NOT online. Yeah, that means you can't log on at an internet cafe and access your passwords, but it's not safe to do that anyway.
KeePass is a free open source password manager. Passwords can be stored in an encrypted database, which can be unlocked with one master key.
keepass.info
There are some plugins so it automatically works / fills in in various browsers, open source, so free. The plugin for Firefox is called Kee, and while that does want you to sign on and store online, you can refuse that option and it still works fine.
keepass.info
No limit on number of passwords, will generate and store strong ones, and, of course, you only need to remember one password, the one for the vault. (I use a 30 character pass-phrase, so even if someone gets access to my machine, it's going to take a while to crack

)