- prices could be: merit points
Merit is not meant to be a currency or a reward system for services on the forum. You are free to merit any post you like and scam hunters are deservedly merited but merit is not = service reward. Although I did propose something similar in the past I realize it will never happen.
- of the other side, people promoting scams will be discouraged to insist into these operations knowing that the ambassadors are motivated to find them fast
We already have scam busters who inform the community of new scams. If proven as scammers users get tagged and it is the responsibility of any individual to check the reputation of a user he deals with in any way.
- I know that this can be done today, also, via "Report to moderator"
Scam reports shouldn't be sent to moderators because the forum doesn't moderate scams. Users of the forum do. A topic of a scammer might be trashed or deleted if it violates forum rules but I don't know if it will be deleted because someone thinks it is a scam.