The share price of H&H Imports jumped $50 million in one day after 50 Cent tweeted about the company. Investigating further, it seems companies have worked out that celebrity endorsements can catapult their product to the headlines. Some are paying celebs anywhere from $100 – $10,000 per tweet to promote their brand. New marketing indeed, although just spotted here in the UK that the authorities are looking to clamp down on this – spoilsports!