This is a great business idea + a very great social activity
But this is not a business model... this frightens me... though I'm putting all my effort to enrich this system and get more share out of it, I can't stop thinking about the sustainability of it.
Can you help me with this concern?
All I know is that as long as people continue to use it, it will be sustained. Beyond that, I don't know. It's like any cryptocurrency. Same concerns, risks, and rewards.