Bill Ackman, the billionaire hedge-fund financier, has faced personal and professional challenges, but has now found fame through his use of Twitter and his marriage to MIT professor Neri Oxman. His social media presence has propelled him into celebrity status, with over 1.2 million followers. Ackman's tweets have covered a wide range of topics, from investments to social issues, and have sparked controversy and praise. He has announced plans to establish a think-and-do-tank and to raise $10 billion through an initial public offering. Despite his newfound fame, Ackman remains focused on using his influence to address societal issues and promote his investment strategies. His recent involvement in defending his wife against plagiarism accusations has also drawn attention. Ackman's future plans include continued social and investment activism, but he remains tight-lipped about specific details.