For anybody who uses Yahoo!Groups, they've changed their Privacy Policy to allow them to spam you. The default settings give them permission to send you offers in every Category by every contact method they have on file for you.
To block this spam:
1) Go to
Yahoo!
2) Scroll to the bottom of the page and click on the link for Updated Privacy Policy.
3) Scroll down to the section about editing your marketing preferences, and click on the marketing preferences link. You'll need to log in with your Yahoo! member ID at this point.
4) Edit your preferences.