Crowley states, “We designed our business cards as collectibles — collect all 6 and unlock a Foursquare badge. Once word of this got out, people were looking all over downtown Austin for employees just so they could introduce themselves and collect a badge. Every time we handed out a card, we got to meet one of our users. Actually encouraging people to reach out and introduce themselves to your team puts a name and a face on the products you’re building. It also helped us start a dialog with people who’d probably never introduce themselves.”

via Growing Your Business: 5 Tips From the Founder of Foursquare.