This is probably most powerful, free and easy way to find unique domain names. A good Dictionary or thesaurus is a good place to find slang, short, common, business related, sophisticated, unique words.

Make a quick pit stop at any online dictionary and play around with online lookup tools.

Say your domain name out loud to see if it is something that is easy to pronounce and memorable

There are many reputable resellers on web that are not approved by ICANN but are simply organizations and individuals associated with a registrar that are allowed to sell domain names on their own. Whether you purchase your domain name through a registrar or a reseller, always find a reputable source for your domain name.

If a registrar or reseller does not maintain an active database, you might find yourself on rare occasions paying for a name that is already registered. If you ever receive such as note from your registrar, or reseller, contact them immediately using an online form or via phone. Make sure notice is legitimate otherwise, you might be victim of a domain name scam. If it is true, your registrar should immediately make a correction, preferably at their expense.

This integrity of a registrar or reseller's database of available names should be maintained at all times.

Sets up conflict resolution policies to prevent domain name theft and copyright (brand name) infringements. ICANN has setup and is always revising its dispute resolution policy so that web users can have fair access to any domain name while protecting sanctity of commercial trademarks. You can get any name you want as long as it is not trademarked by another person or organization.

It is always in your best interest to get familiar with ICANN website as well as its rules and policies. To build a successful online presence is a long term proposition. If you fail to do your due diligence upfront, it can have serious repercussions later on due to lost time, web traffic, money and possible loss of a domain name.