Did you know that google checks your domain name “whois” info. It then uses this information to also rank your domain.
The number of domains you have registered in your name is looked at.
The number of years you have registered the domain name is also looked at.
This means if you register your domain name for 10 years it likes this. If you have other domain names it will check them and then your new one to determine your credibility.
If you have an old domain name which has been around for long and you use this for something new, its like transferring all the credibility other to the new. The longer you have had the domain name the value it holds
Makes you wonder doesent it? how much informatation google is holding on you?