When you register a domain name all of the details you provide to the domain registrar are placed in a public database that anyone can search using the WHOIS lookup tools found on various sites online. Fortunately, you can prevent this occurrence by registering the domain privately. Nearly every domain registrar will give you the option of registering the domain privately, however it will cost you an extra $10 in most case.
Private registration is beneficial to businesses and people that do not want their personal information online for predators and competitors to see. Many times the information in the WHOIS database is used by telemarketers to make soliciting phone calls about web based services and other marketing endeavors. If you would like to avoid this hassle then you should definitely consider private registration.