What are you trying to say? Where most people DD readers are located it doesnt take much effort to find someone with a BA card. The AARP though is a good question.
Just that on DDF we might easily know someone who has a BA card. The same can't be said for DDMS readers. Just because someone lives in Brooklyn where 1000s of people have a BA card, doesn't mean the average DDMS reader knows someone. Whatever, not important.