I am reading all over the internet, “What should we do with PassBook?” Well I am using passbook to solve a simple problem, a business card.
Most people in the tech industry have an iPhone and they have updated it to IOS6. So, why are people still giving out card?. I just email or text my URL and wholla they have my card. Best part is now I have a way to update my circle on whats going on with me. Say, I have an event, I just update my PassCard and they are notified.
If you have not figured it out by now, I am one of the developers of PassHound and I see the potential of PassBook even if it is self serving at the moment. So, if you want to keep up on what I am doing or just want my contact information, well here it is.
My Card: http://tinyurl.com/bsjmxab
Troy Simon 
We’re actually working to connect to a user linkedin account and generate their passbook business card automatically. Then make it live by keeping it synced with changes to Linked in. More to come but looks like you had a similar idea.
We did that as part of a demo…. if you want to talk more email me at: troy.simon@passhound.com