Yahoo is now using something called "Web Beacons" to track Yahoo Group
users around the net and see what you're doing and where you are going
similar to cookies. Yahoo is recording every website and every group
you visit. Take a look at their updated privacy
statement: http://privacy.yahoo.com/privacy

About half-way down the page, in the section on cookies, you will see
a link that says web beacons. Click on the phrase web beacons. That
will bring you to a paragraph entitled "Outside the Yahoo Network."

In this section you'll see a little "click here to opt out" link that
will let you "opt-out" of their new method of snooping.

Once you have clicked that link, you are exempted. Notice
the "Success" message on the top of the next page. Be careful because
on that page there is a "Cancel Opt-out" button that, if clicked, will
*undo** the opt-out. Feel free to forward this to other groups.