The idea is to have one password, with a salt(or service name) for all services. To make it a little more secure, you could set up different levels - email and

The idea is to have one password, with a salt(or service name) for all services. To make it a little more secure, you could set up different levels - email and social, news sites, games..., basically any way you want to do it, and have a different passphrase for each level. When changing passwords, you just need to change the salt of that particular service.