"Who's Who" scams...
These are aimed at older folks who are a little bit famous, maybe just in their own field.
Marquis Who's Who is not a scam. Well, not really. They've been publishing the well-known "Who's Who" directories for ages, and have branched out into specialized directories and special honors. Listings and honors are free. But you might want to buy a copy of the book. And you might want to pay for a press announcement. And (etc etc etc). But they're not a scam.
However, there are REAL scammers who are much less honest. I'm not going to name names, because these guys are professional con-men, and they've been doing various scams for decades, and I don't want to get sued.
How it works: They contact a person who has recently received some honor or award, e.g. from Marquis Who's Who. They might not exactly claim to be associated with Marquis but they will probably give that impression.
They will tell the target person about yet another honor that he/she has been selected for. And they won't make it entirely clear what, exactly, you're signing up for, but once they have a credit card number, there will be a charge for a quarter-page press release ($1500). Or a half-page press release ($2000). Or a radio interview ($2500). Or quite possibly all three.
The "press release" (if ever published) will be on a blog that nobody reads. The "radio interview" (if ever recorded) will be on a podcast that nobody listens to. The claim that your info will be sent to all major search engines merely means that Google can index their blog/podcast.
Just something to watch for if you have elderly relatives who are a little bit famous and a little bit easy to trick.
https://en.wikipedia.org/wiki/Who%27s_Who_scamhttps://www.aarp.org/money/scams-fraud/info-10-2012/beware-the-whos-who-directory-scam.html