If you hate spam as much as I do you might want to look into this...
I found it was a slightly different path to get to the correct page but,
after you sign in, click on "account info" in the top right hand corner of
the page, enter your password again and you're on the right page.
>I'd recommend going and changing your Yahoo preferences immediately,
>if you use them.
>----- Forwarded message -----
>Important! If you don't want to receive a lot of spam from
>advertisers, please note the following:
>now been changed. You will need to reset them. Here's how.
>After logging in to Yahoo, click the tab at the top of the page that
>says "Account Info." Enter your password. When that page opens,
>scroll to just under your listed email addresses. Then click on
>"Edit Marketing Preferences."
>When that page opens, you'll see that Yahoo has set each option to
>YES (please send me spam). You'll need to click on each and every
>option to change it to NO. Near the bottom of the page, be sure to
>check NO about phone and postal delivery of advertising. then
>click "Save changes."
>Folks, I suggest, "Do it today!"
>----- End of forwarded message -----