Yahoo is now using something called "Web Beacons" to track YahooGroups
users around the net & see what you are doing.... seems these beacons
work like cookies ... Go to this URL:
http://privacy.yahoo.com/privacy/us/pixels/details.html
About halfway down the page (on the right side), in the "Outside the
Yahoo! Network" section, there is a tiny little "click here" link at
the
end of the paragraph that lets you OPT OUT of their electronic
snooping.