@atomicpoet@sub_o
The biggest problem I see with this idea is Europe - since it's app-based, there is no way for anyone to know their data is being used in such a way, and without notice or consent, the EU is going to have some very negative things to day about it.
If it's not 100% "opt-in" to use (for example) data I have created, then there are some significant privacy concerns here.
Utilizing someone's data without notice or consent... that's treading a fine line.