What is the killer app for this? Dan Suarez's Daemon series probably provided some insight into what might be possible in terms of literal secret meta-communiti

What is the killer app for this? Dan Suarez's Daemon series probably provided some insight into what might be possible in terms of literal secret meta-communities, etc but why would I want to see an internet link about the things I'm looking at in real life? Assuming I have the money and don't mind the looks - why should I buy these?