At many domain registrars, Whois privacy is a nice upsell opportunities. Some domain registrars, like Uniregistry (and now Namecheap) offer free Whois privacy for domain names registered there.
I have never been a big user of Whois privacy, but there have been times I used it at Uniregistry when I wanted to keep an acquisition or sale even more private than usual.
How often do you use Whois privacy?
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