IMHO, it's better if it isn't as it helps you to very easily detect phishing. In my case, the address I use to log into paypal is only used for my paypal accou

IMHO, it's better if it isn't as it helps you to very easily detect phishing. In my case, the address I use to log into paypal is only used for my paypal account. Nobody has it on file (unless paypal gives it away to third parties which it sometimes seems to do). So if mail from "paypal" arrives, a strong sign of it being a phising mail is if it sent to any but the specific paypal address. I'm generally using special email addresses for all sites I'm having an account with (<sitename>@(gnegg|pilif).ch, depending on mood).