Facebook brought the real person into the virtual world and made Facebook their extension of real world. People have real name and their own photo as profile picture. Keeping oneself as real has made the whole ecosystem healthy.
So all it takes is to follow this Hype Cycle from time to time ,understand the trends as a consumer or entrepreneur or a corporation or as an investor and be aware about the latest hot and most hyped area in science and technology . This could help you in identifying where real value is rather than going by the tide and believing the hype.