Get a .com! and if not, then aim for a .net or a .org. Most major Websites use a .com

Avoid under score, hyphens and digits in the domain name.

Use the common right spelling : Avoid using 0 instead of o in your domain name like yah00.com or g00gle.com

Keep your domain as short as possible with a meaningful name.

Avoid using a prefix or suffix with the domain name. The commonly used prefixes are I (Internet), V (Virtual) and E (Electronic).