These letters stopped for me when I enabled whois privacy on my domains. Which sucks, because if you need to get a hold of another domain holder... you have to

These letters stopped for me when I enabled whois privacy on my domains. Which sucks, because if you need to get a hold of another domain holder... you have to basically pray that the registrar will give you the information (or pass your contact information along), or lawyer up and sue them for it.