From the blog post: "Here’s how it works: Simply input your true, accurate height with a screenshot of you standing next to any commercial building. We’ll do so

From the blog post: "Here’s how it works: Simply input your true, accurate height with a screenshot of you standing next to any commercial building. We’ll do some state-of-the-art verifying and you’ll receive your badge directly on your profile." +1 for April Fool's