The U.S. Congress passed the Combating Online Infringement and Counterfeits Act in 2010. Consumer Electronics Association vice president Michael Petricone was worried that seizure was a blunt instrument that could harm legitimate businesses. After a joint operation in February 15, 2011, the DOJ and the Department of Homeland Security claimed to have seized ten domains of websites involved in advertising and distributing child pornography, but also mistakenly seized the domain name of a large DNS provider, temporarily replacing 84,000 websites with seizure notices.
To host a website on the internet, an individual or company would need their own computer or server. As not all companies had the budget or expertise to do this, web hosting services began to offer to host users websites on their own servers, without the client needing to own the necessary infrastructure required to operate the website. The owners of the websites, also called webmasters would be able to create a website that would be hosted on the web hosting service's server and published to the web by the web hosting service.
In result, your personal info, such as physical address, emails, telephone number, etc is hide from the public. Domain privacy is important because your domain record (ie. the WhoIs data) may also be used in ways that aren’t legitimate or desirable. Since anyone can look up a WhoIs record, spammers, hackers, identity thieves and stalkers may access your personal information!