A device identifies a search result document based on a search query, and searches a blog post repository to identify a blog post relevant to the search result document. The device also rejects the blog post if the blog post has insufficient length, contains outgoing links located a predetermined distance...http://www.google.com.tw/patents/US8117195?utm_source=gb-gplus-share專利 US8117195 - Providing blog posts relevant to search results