Google vs Yahoo!

The comparison's been done to death, mostly to Yahoo!'s detriment, and here's yet another: so both Google and Yahoo! decided a while back to allow users to opt out of customised advertising. Google explained their policy clearly and created a 3-page FAQ with 7 questions. And most importantly, they provided a big blue button labelled Opt Out at the top of the page. Yahoo!, of course, explained their policy too but as part of an 11-page press release complete with 9 footnotes. Egads. I didn't read the release (would you?) and now I have no idea how to opt out of Yahoo!'s advertising. No matter. I never use Yahoo! services anyway.