What is a domain ? - A domain is your unique online identity. Once you register a domain name, as long as you keep renewing it every year, it will remain yours.
Today web site is a key marketing/communication medium for businesses and non-profit organisations. Proper domain registration is essential for retaining ownership and control of the domain name.
Long or Short Domain Names? -
If your company name is XYZ Consulting don't register domain name like xyzc.com even though this is short it will be difficult to remember, more easy to remember domain name will be xyzconsulting.com.
How Many Domains should I Register? - If you are a small company or organisation you need to register only one domain name. Having too many domain names will not help your business. For business success what you need is a good quality website designed by an experienced web designer. If you are a large company with registered Brands® and Trademarks™, you can register all Brand names and Trademarks as domain names.