Almost 400,000 people have shared a picture of Bill Gates holding a message on Facebook. The message says: ‘If you click that share link, I will give you $5,000. I always deliver, I mean, I brought you Windows XP, right? The more you share material like this, the more likely it is that a malicious link will appear to your friends and family when your Facebook account gets compromised. The more people share material, the less likely it will be a real scam or malicious link.”]
Source: https://nakedsecurity.sophos.com/2013/04/08/bill-gates-5000-dollars-facebook-sharing/