A domain name also called URL of the website is nothing but a web address that potential clients and customers will use to locate your site. This is also called the URL of the website. The best thing is to have website theme similar to the domain name. So care should be taken to choose the right domain name. Google's search engine algorithm takes into consideration the age of a domain name. Older domains give higher relevancy score in Google.
The age of the website is determined by the period since the content has been on the site, period since the site has been in promotion, and even the last time when the content was updated. The age of a domain is measured by the actual date the domain was registered, and how long it is registered for. Some domains only register for a year at a time, while others are registered for two, five, or even ten years.
As per the latest Google update, some of the big changes seen were the importance given to age; age of incoming links, age of web content, and the date the domain was registered. Google minimizes search engine spam by giving new websites a waiting period of three to four months before giving it any kind of PageRank. While in the sandbox you can concentrate on your backlink strategies, promoting your site through Pay-per-click, articles, RSS feeds, or in other ways.
There are a few things you can do to help ensure that your site won't get lost in the SERPs because of the age of the domain.
1. Register the domain name for the longest period of time.
2. Consider registering a domain name even before you are sure you're going to need it.
3. Think about purchasing a domain name that was already pre-owned.
4. Keep track of your domain's age.