Thank goodness most scammers are stupid, so they don’t realize that addresses are free and that they can generate them in unlimited quantities. The problem is those who know their job very well and do business according to the model of one person - one scam - one address, and then of course all over again.
Those websites can be used to detect stupid scammers whom reused their bitcoin addresses. You are right that smart scammers don't reuse addresses or they don't reuse wallets. They will create a new wallet for new scammer targets.
Those sites and past scam addresses, transactions, tags, labels, information can provide free lessons. Some readers can find something and take it as lesson for them. It can help them to take care better in crypto.
Just be smart and don’t believe in promising stories on social media and what you receive in your email box - then there will be no need to check addresses anywhere
Don't carelessly and arbitrarily do everything. Especially being very careful for financial things.
Thank you for sharing these helpful tools, OP.
Welcome. I only shared what I know.
The only problem with such services is that they are only useful for those who already know about their existence and know how to use them.
Also there are some concerns regarding their reliability. Especially with tagging addresses (e.g anyone can go to bitcoinwhoswho and tag any address he wants as Scam!).
Yeah. They are third party websites and can be compromised for personal attacks.