I generate different, easy to remember passwords for every site by using a random looking base string and slapping in a few characters derived from the domain.

I generate different, easy to remember passwords for every site by using a random looking base string and slapping in a few characters derived from the domain. For example you could take the first and last letter of 'ycombinator' and use 'ut' as your changing characters (the letters to the right of 'yr' on the keyboard.)