You should never substitute a belief for an investment strategy. Seriously, even if your idea of Facebook's long term potential is correct, you can take a haircut on whatever random thing occurs today. Balance the utility of what you gain if you're right compared to the utility of what you lose if you're wrong (think twice if you really want to make a "heads, double your house's square footage, tails live off dumpste…
The guy probably should take some courses on retirement/investment planning.