Making a scammer's scam or number googlable on every scam-warner-anti-fraud-busting site you can find is a great way to slow that scammer down when a suspicious potential victim goes looking for information, finds your post and then does not become a victim because you took the time to "get the word out".
Wasting a scammer's time legally and safely is called "scambaiting". If you google that word, you will find sites where you can read scambaits, post up the emails and email addresses of scammers, ask questions and learn all about that hobby.