yeah well, his post is kinda outdated guys. Lets be honest, we are waiting for the 500+. next week/month probably, if people keep buying and trading we'll see this in no-time.
even at the time he posted it it was obvious price would never drop to $100
Price drop to $100 could happen in a flash crash when the market depth is not enough. But the price will recover to normal level quickly.
Bitcoin itself is being developed all the time, so the value will increase.