Technorati is a real-time search engine that tracks over 22 million blogs and billions of links to determine a blog's authority and rank. A blog's authority increases by 1 for each unique incoming link and remains for 180 days. People use Technorati to track topics across blogs and it allows users to claim their blog to be included in Technorati's search results. To claim a blog, users create a Technorati account, visit the claim page and copy a code to paste on their blog to verify ownership.