For what it's worth, I've been getting these "Euro Dice Exchange" spam messages in Canada as well. I believe the emails are being sent out sorted by domain name

For what it's worth, I've been getting these "Euro Dice Exchange" spam messages in Canada as well. I believe the emails are being sent out sorted by domain name, as the email I received was addressed to my both my university e-mail (which I used to sign up for Dropbox) and several other university e-mail addresses. This is definitely not from the LinkedIn hack. I don't have a LinkedIn account. Combined with the people who were receiving spam at Dropbox-specific emails, I don't see how it could be anything other than Dropbox.