When you press this page's Search button, it triggers a Python script on
the server, which in turn builds a
site-specific search query and passes it to a selected search provider using
an HTTP redirect.
You can view and fetch the code of the first two hops in this interaction
with the links in the following:
This page ⇒ Python script ⇒ Provider
The net effect displays results in the provider's search-results page. The script in the middle uses basic CGI, and its redirect is a simple technique that leverages work already performed by search providers that have crawled the site (invited or not).
Assorted usage tips:
Because this page delegates searches to third parties, it sports some inherent caveats:
Some caveats can be lessened by user choices. Tracking, for example, can be addressed by using privacy-respecting sites, which are strongly recommended for users of this page. Among these, DuckDuckGo seems the furthest along, StartPage seems a close runner-up, and Privado and OneSearch are promising newcomers. Although other search providers can be selected above for comparison, their tracking focus makes them innately perilous, and a use-at-your-own-risk proposition.
Regardless of their tracking policies, some search providers still piggyback on others (your results may come from Google or Bing, even if you're searching elsewhere), and most—if not all—will still sometimes show you sponsored links or ads. There is no known silver bullet for all the annoying ads, unfortunately, but non-tracking providers at least won't treat you like a resource to be covertly exploited.