Anyone for a bizcard?

What would you do if you got handed a guy's business card?
You have never met him. He lives in your complex. He has obviously seen you entering your house.

This is my take on it.
ARE YOU STALKING ME YOU FREAK?!
Don't sent me your business card - I don't want to do business with you.
Thank you for adding your unit number - I'll be sure not to go knocking on your door.

In short guys, if you want to meet a girl in your complex - try introducing yourself in person.