Obviously, there is a practical tension to keep costs to a minimum, especially when teams are small and frugality is important.
But there is also a strong need to evangelize one's product during physical meetings or chance encounters. Without getting too geeky (like emailing one's contact info to another, etc.) what do HN'ers typically do?
A startup can't generate revenue or even continue, without the spread of word of mouth, which is a BIG way to get new customers.
I've been there when you don't have a business card and it does 2 things:
I would advise vistaprint.com, they give 250 free business cards, you just have to pay shipping. Here's the link: vistaprint.com/thankspandora