Here's another far-fetched idea. Suppose that before I use Google's "search engine" I would like to know what data they collect and store about my use of their search engine (query terms, IP address, cookie ID), how long they keep it, and the purposes for which they use it. And let's assume for the moment that Google's privacy policy actually discloses that information. Then having to use the serch engine in order to find that policy doesn't help me very much.