I can speak in my name.
I saw them posted a lot on Discord and Telegram mostly.
Or scammers send you PM with some fake giveaway.
The same situation is for me. Discord, Telegram, Twitter and Facebook ... Scammers use social media for promoting trash like freixtrade
I am also a moderator on a few Facebook groups and posts waiting for my approval. There I find a lot of phishing and doubler sites.
I think all of these websites need to be related to the word "scam", "fraud" etc... Sometime, someone may want to buy a domain to start a regular business, this is how at least he can find out that he was once used for fraud. There is my list of Ponzi websites https://bitcointalksearch.org/topic/scam-alert-list-880-scam-websites-updated-12jully-23-5201588 it is advisable to stay away from them.