- You have a forum with SMS verification
- Scammer gets a (number of) revenue-shared phone number(s)
- Scammer creates a (number of) accounts on your forum and attaches those numbers
- Scammer triggers a (lot of) verification code(s) for those account(s)
- You pay $XXXX
- Scammer gets 50% of $XXXX
Yeah. Good luck with that.