Please read this, about your internet privacy with Yahoo.....

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.