13. The method of claim 11 where the source includes the blog.
11. A method performed by one or more server devices, the method comprising: receiving, by one or more processors of the one or more server devices, a search query; determining, by one or more processors of the one or more server devices, a relevance, to the search query, of a blog or a post to the blog using a searchable index, the searchable index being formed by combining information extracted from the post to the blog and information extracted from a source that is associated with the blog but is not associated with any posts to the blog; and providing, by one or more processors of the one or more server devices, information regarding the blog or the post to a client device when the blog or the post is determined to be relevant to the search query.