DiscoMoose

Google lets you narrow your search down to within a specific website, or to within a specific TLD (for example .gov).

You can do this by using the site: command in your search, for example:

• java site:sun.com - searches for java on sites with the domain name sun.com (this includes subdomains, like java.sun.com)
• java site:java.sun.com - more specific; searches for java on sites with the domain name java.sun.com.
• copyright site:gov - searches all US government sites (domain names ending in .gov) for the term copyright.

If you have a low-traffic website, consider joining the Money4Banners advertising network. They will pay you £10 + £5 each month for displaying a small advert on three of your pages, regardless of traffic. American webmasters are welcome, and since £10 == $20, you make more!