What is the importance of Public WhoIs Data in SEO factor?
Public whois domain gets importance and influence in the Google ranking than the private whois domain. A private whois mean "something to hide". Matt Cutts quoted Public vs. Private WhoIs at Pubcon 2006 as:
""¦When I checked the whois on them, they all had "whois privacy protection service" on them. That"™s relatively unusual. "¦Having whois privacy turned on isn"™t automatically bad, but once you get several of these factors all together, you"™re often talking about a very different type of webmaster than the fellow who just has a single site or so."