[fohlin]

Your idea sounds like an automatic version of SuperGenPass: http://supergenpass.com

I've been running it for years, which feels quite nice when sites start leaking passwords left and right.

[thatthatis]

How have I functioned as an adult for so long without knowing that this plugin exists?

Thank you for sharing, I am going to download this immediately. My current algorithm for passwords is human based so it is an unfortunately simple algo. It provides some additional security over raw reuse but not enough for me to be comfortable.