the following will list a few reasons and then detailed explanation:
1, registered and popular and easy to remember domain name in order to sell a good price in the future (for example: bingo.com this year sold 1 million dollars).
2, for your company and product registration in length of 23 characters or more domain names (for example, we registered " internetmarketingcenter.Com", which in the past is not able to do).
3, now have better than registered domain name (for example, if your domain name is hard to remember, and in.Net or.Org extension, so now is to apply for a.Com extension of the address bar, which is more suitable for your business).
4, registered with keywords, can effectively improve your search engine ranking domain name, search engine trust can describe the site and contain the keywords of domain name.