The Key Club International and Circle K International graphic standards now include the Verdana font as an option for marketing materials. This addition is reflected in the online versions of the Key Club and CKI graphic standards manuals, which you can find at www.keyclub.org and www.circlek.org. (Other versions of these style guidelines don’t yet reflect the addition.)
Why add Verdana? It’s free and available on all computers. It’s also readable in small sizes.