People joke about being addicted to their cell phones, but recent research suggests it's no laughing matter. A recent study found people were more likely to give in to cravings to use social media than they were to give in to satisfy other desires. That little blue bird may seem harmless enough, but are we on the verge of becoming a nation of insatiable Twitter junkies? Learn more about your brain—on Twitter. Click more to see the infographic!