My guess is that a site I have signed up with has either been compromised (I used this email to sign up for loads of "free bitcoins"-offers) og was built with the intent of gather e-mails/passes.

I may even have re-used the pw, so it could be that these sites are set up to harvest email/pw of bitcoin users. It must either be that, or that my very simple pw was guessed somehow.

Just goes to show that you can never be too careful, and I sure am glad this was a gmail I made with the intent purpose of signing up for shit offers.