Google, Microsoft’s Bing, Yahoo! Search, and other search engines are speakers. First, they sometimes convey information that the search engine company has itself prepared or compiled (such as information about places appearing in Google Places). Second, they direct users to material created by others, by referencing the titles of Web pages that the search engines judge to be most responsive to the query, coupled with short excerpts from each page. Such reporting about others’ speech is itself constitutionally protected speech.
Third, and most valuably, search engines select and sort the results in a way that is aimed at giving users what the search engine companies see as the most helpful and useful information. (That is how each search engine company tries to keep users coming back to it rather than to its competitors.) This selection and sorting is a mix of science and art: It uses sophisticated computerized algorithms, but those algorithms themselves inherently incorporate the search engine company engineers’ judgments about what material users are most likely to find responsive to their queries." Read more
