1. A method performed by one or more server devices, the method comprising: fetching, by one or more processors associated with the one or more server devices, first information from a post to a blog that includes a plurality of posts; extracting, by one or more processors associated with the one or more server devices, second information, associated with the blog, from a source different than the posts included in the blog; creating, by one or more processors associated with the one or more server devices, a hybrid document by combining the first information and the second information; and using, by one or more processors associated with the one or more server devices, the hybrid document to determine a relevance of the post to a search query.