I got screwed by a pump and dump scam when I was 14. I knew what was going on and would buy the stock the moment the pumping began and sell 24 hrs later, making a profit 4 months straight. The one month I bought the company and it was frozen as the FBI made one of the largest busts in history, taking down a big chunk of the Bonnano family.
http://money.cnn.com/2000/06/14/companies/fraud/
Lesson learned at an early age!