GoogleSharing is a special proxy service that doesn’t hide what you are searching from Google. Instead, it obscures where the requests are coming from. GoogleSharing is not a full proxy service designed to anonymize traffic. It is exclusively intended for certain aspects of your communication with Google. So there are no “alternative” websites to visit. Your use of the web need not change at all.
How does it work?
The GoogleSharing system is a custom proxy with a Firefox Add-on.
The proxy generates a pool of GoogleSharing “identities,” each containing a cookie issued by Google and an arbitrary User-Agent for one of several browsers.
The Firefox add-on watches for requests to Google services from your browser… and will transparently redirect them to a GoogleSharing proxy. There your request is stripped of identifying information and replaced with a GoogleSharing identity. Then this request is forwarded to Google, and the response is proxied back to you.