The lesson is never to answer the question with yes/no. Get them to come up with their own opinion, do their own research, and decide how much to invest in Face

The lesson is never to answer the question with yes/no. Get them to come up with their own opinion, do their own research, and decide how much to invest in Facebook, if anything at all (it's not really a YES/NO but how much, and for how long...). If they don't want to do all this work... recommend SPY.