My husband and I have had our own domains for several years. Today he looked up his domain on the WhoIs Database.
It's pretty scary. There you could find his name, address, etc. That's pretty scary. Especially when you consider that some people post controversial stuff up. Not everybody likes it when you say some Christian things (especially when you start talking about sins or telling people they're going to hell).
I don't know of any case where someone was assaulted or killed because of this information, but it could happen, and that's what's scary.
Dh has since put false information on our whois registry. In these days of identity theft, you never know.