Last I checked, Askaudio.com was
a third party site.
I suppose CW could have put a warning in the email to ignore any non-CW products that might appear on the same page.
Better yet, since the ads appear on the right-hand side of the screen, CW should perhaps have given the instruction to cover the right eye when looking at that page, thus increasing the odds that non-CW ads are blurred on the periphery.
Or, you can use a plugin like Ghostery to block the ads. Simple.