Yes, you read both parts of the above headline correctly. 50 Cent made a fortune from rapping, but that doesn't mean he's content to rest on his laurels and Tweet photos of himself with stacks of cash all day. Okay, well he does do that a fair amount But our point is that 50, a.k.a. Curtis Jackson, is proving quite the businessman in addition to entertainer. MAKIN' BANK: Chelsea Handler must be attracted to more than his rap skills. 50 Cent recently Tweeted about a penny stock company he's invested in ... one that's up 290 percent since he pitched the stock tip to 3.8 million followers. "You can double your money right now. Just get...