A few days ago I borrowed Far Cry and installed it, tried to get online, I was told to sign up to ubi.com so I did, and ever since I have been sent about 500 spam emails per day!
Holy shit! I'd be taking action against Ubisoft. You'll never stop the spammers. Ubi shouldn't have given out your email address.
I probably get around 30 - 50 e-mails a day.
I used to get this on my Yahoo account (since practically day 1), I think due to a lot of these spam bots putting random letters together until one combination doesn't bounce. My ISP account used to be fine, but something changed several months ago and now I get around the same amount there as well.