I believe several ISPs have deals with Yahoo to offer an email address to their customers. BT (British Telecoms) in the UK use them, as do AT&T in the USA. A hu

I believe several ISPs have deals with Yahoo to offer an email address to their customers. BT (British Telecoms) in the UK use them, as do AT&T in the USA. A huge number of people never change from their supplied addresses, and seeing as they tend to be more likely to click on a link in an unsolicited email, this has the potential to cause quite a few issues.