I just came across an article that Dave Jackson wrote about a clever little way to engage your audience while making a few bucks at the same time. You can read it here.I'll challenge you to take this technique up a notch. Instead of asking for a dollar to enter the raffle (which would, in fact, be illegal in most states), trade your raffle ticket for a valid e-mail address! If you spend five bucks on a shirt, but you gain fifteen or twenty new mailing list subscribers, you'll see your investment pay off in spades.