There are numerous registrars they differ from prices, services, support, management, etc. This is the reason that choosing a good registrar is very important.
Admit it or not, if you know of a "trick" that will get your site to a better rank on the search engines, you will use it! But think twice, you may just be harming your site rather than improving it! One trick that may not be very advisable is multiple domain names!
Domain Name
full story