Ask HN: Cheapest place to buy a .com domain
Where is the cheapest HN approved place to buy .coms?
How do I know? Because years ago I registered a few domains with a godaddy-specific address (godaddy@myhost which was an alias for my real account), and I can't tell you the unbelievable amount of spam I got through that address over the years that followed. And godaddy was the ONLY site I ever gave that address to.
I don't care if they are the cheapest or not, I will never use them again.
The same holds for any registrar though. The only way to avoid having your email out there in the open is to sign up for a private WHOIS service (which GoDaddy offers, as do many other registrars).