Choose a registrar...

Do they speak your language?

Do they offer all your preferred extensions?

Good and fast hotline? not offshore?

With a few domain names you can even try multiple registrars.

With a big portfolio it's harder to manage your domain names without mistake if you choose too many registrars.

Will you get alert services for your domain names renewal?

What are the included services?

Sometimes registrars offer you mobile services... A good thing in a world where the first is always the winner.

Bulk or multiples search of free domain names is a must for saving of time and efficiency

Time is money! How long to get OK receipt of your domain name registration ?

You won't get a free email like @domainname.com with all registrars so have a look before. And furthermore hosting space to publish your web pages also.