Ethereum Scam Database
etherscamdb.info
etherscamdb.info
https://etherscamdb.info/scams/
But with a little more info text at the top. That way people get to see what the etherscamdb is straight away.
If the data were kept current and remained open for other systems to query, it seems like something that could be useful. There should probably be a way to appeal something that is blacklisted in the database just as there is a way to report.
What prevents someone from listing a "legitimate" Ethereum ICO or whatever?