Silly Yahoo

I just got Nigerian scam email, in French and actually about Abidjan. It was from a yahoo.ca email address. Yahoo sticks a little ad at the bottom of every email sent from their domains. This one said:

Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail at http://mrd.mail.yahoo.com/try_beta?.intl=ca

It doesn't exactly convince me.