Opting Out of Yahoo and Google Ads
This doesn’t particularly have anything to do with switching from a PC to a Mac but is more a public service because I think it is good to spread this information as widely as possible.
If you would like to opt out of targeted ads from Yahoo or Google this can now be done at their websites. It is done by placing a special cookie on your site that tells those two servers not to place their own tracking cookies there. For Google this also include Doubleclick cookies (Google bought Doubleclick).
Since cookies are browser-specific you have to visit these pages in each of the browsers you use and opt out for each. If you already block cookies from these sites then this procedure isn’t necessary (or possible since it works by placing a special cookie in your system).
Here are the pages to visit: