Mozilla is trying to fix this, through the BrowserID (Mozilla Persona) project. http://www.mozilla.org/en-US/persona/ http://www.mozilla.org/en-US/persona/ Th

Mozilla is trying to fix this, through the BrowserID (Mozilla Persona) project. http://www.mozilla.org/en-US/persona/ http://www.mozilla.org/en-US/persona/ This article actually somewhat validates the approach BrowserID takes: you use your email address as your ID. BrowserID provides a way to verify that you own the email address in question (that you are who you say you are). There's a lot more planned, but the core of it is simple and easy to implement. ObDisclaimer: I work for Mozilla, but not on Persona.