I have wanted to add search to this site for a while. This site is built on EPiServer and also uses PageTypeBuilder so I had previously toyed with the idea of the built in EPiServer search. However I never quite got round to it and wanted to learn something new (working with EPiServer and its features are part of the day job after all).
Google Mini and Google Search Appliance both offer a powerful search for your EPiServer site. In the most simple implementation you simply point to the box to your URL and get some Google quality results back.
However the Google boxes will crawl the site at their own pace (its possible to configure). But this isn’t always ideal as site editors like to see their content indexed on the site pretty quickly rather than wait for Google to get around to re-crawling.