It can be very lucrative if you do it right. I made one solid investment and cashed out at the right time and have been enjoying it for the last couple years.
I wouldn't suggest getting stock tips off a message board though. Do your own research and investigate the companies you are interested in. A five year history is a good start along with any court related incidences, ongoing investigations, environmental issues, and general market value of the actual product produced all influence whether it is a good investment or not.
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"I'll keep my money, guns and freedom. You can keep the "Change."