[Ankesh]

Hi Jason,

Don's given you some great ideas.

Here is something simpler: add a business-card exchange.

Make place for 6 business cards on top of - or besides - the vending machines. Tell the business owner that you'll distribute his business cards at 6 other places.

You'll need to go and get more business cards every time you go and re-fill the vending machines. And you'll need to keep a few spare business cards too (because the business cards you collect today can only be placed near the vending machines on your next round).