Brian Walton proposes building a new LinkedIn product to facilitate connections between PR professionals and journalists. It would allow PR professionals to search for relevant media contacts and submit story ideas, and journalists to post requests for information or experts. This could disrupt the media database industry by providing more accurate data directly from journalists on LinkedIn profiles. Key features would include search, outreach tools like InMail, and analytics. It could generate $175M-$2.8B annually if adopted by PR professionals. Challenges include getting more media organizations and journalists involved plus competing with databases containing journalists' article clips.