Google Site Search
I just discovered Google Custom Search Engine … and I think it is perfect for my gallery site.
The results of the search are very customizable. For example, instead of having everything in the domain searched, you can limit searches to within pages or via text-matching. Configuring custom search to only search “ribbed.us/*zen*” for example will only return results from my gallery site. The results can now also be put into an iframe so that you can wrap the results with the theme of your site. There is also an Ajax option which shows results in an overlay above your page.
Other features include collaboration with other users to refine the custom search … isn’t this Google’s job? 
, a business edition which includes ad-free results, custom branding, etc., and integration with your Adsense account.
Yet another great service from Google.
Actual customization to my search results inc when I have more time to fool around with it.
