> Put another address into the whois

If you run an ICANN registrar, you should be aware that ICANN requires whois information to be accurate. Providing incorrect data is grounds for cancellation of your domain name. I guess long as you can still be reached from the address it would be fine though?

Personally, I use whois privacy because I don't want my physical address (and identity) to be publicly available. I had one domain that didn't have privacy years ago, and I kept getting snail-mail spam every year asking me to "renew" it, from some registrar I'd never heard of.