Also, it's not just big companies who "could have done it". About a million different teenagers (including me) made virtual pet sites in the early 2000s. Virtua

Also, it's not just big companies who "could have done it". About a million different teenagers (including me) made virtual pet sites in the early 2000s. Virtual pet sites have profiles, friends lists and social features. If you get rid of the virtual pets, you have a social network. But that probably seemed too simple to us.