If your search turns up any names that are the same or similar to your proposed domain name, ask these questions:

• Does your website offer goods or services that compete with the goods or services being sold under the other name?
• Does your website offer goods or services that typically are distributed in the same channels as the goods or services being sold under the other name? This would be the case, for instance, if you plan to offer sports equipment on your website, and the owner of the possibly conflicting mark sells sports clothing.
• Might your website in some way divert business away from the mark's owner because of the name? For instance, could the other owner show that your domain name is so similar to the other name that users might end up on your website by mistake?
• Is the other name very well known?

If the answers to all these questions are no, you can feel reasonably free to go ahead and use your name without fear of creating a legal conflict. If you answer yes to any of them, there will be some risk of a legal challenge down the road. If you aren't sure, take an informal poll of friends. Would they be confused by the simultaneous use of the two names? Might they end up on the wrong website? Another option is to run the possible conflicts by a Trademarks Attorney. You will benefit from having a trained eye review your situation and evaluate your options.