If you have a reasonable stack of X-cards, you can pass a few out to friends and family. You can also leave a few on bulletin boards at a local coffee shop (I tend to do this sometimes), a public library, or place a small stack of cards at your favorite fast food restaurant. Or, if you're a college student like me or you know somebody who is, go to your Student Organization and ask for approval to leave some cards and/or flyers on some bulletin boards around campus.