Over the past few days, several well known companies have leaked their users email addresses for different reasons:
September 21st : Poundhost
September 23rd : Demon
September 23rd : Livejournal
You simply can’t trust websites/companies to protect your email address. I think this justifies the method I’ve come to use over the past several years of giving each website/company I sign up with a different email address.
I only give my private personal email address to people I actually know. Unfortunately, it can be leaked that way too if their machine is compromised by malware, but if nobody knows your email address, what’s the point in having one?