users to look up the search volume and trend for certain hot keywords and phrases. It can serve as a Baidu keyword research tool. Baidu Bookmarks (known as Baidu Soucang) is a social bookmarking service supported by Baidu.com Baidu Browser is a web browser first released as a beta in July 2011. It has been noted that the user interface looks very similar to Google Chrome/Chromium. Baidu Yi is a smartphone operating system based on Android OS, announced in September 2011. Baidu Library is an open online platform for users to share documents. All the documents in Baidu Library are uploaded by the users and Baidu does not edit or change the documents. Users can read and download lecture notes, exercises, sample exams, presentation slides, materials of various subjects, variety of documents templates, etc. However, it is not completely free. In order to download some documents, users should have enough Baidu points to cover the points asked by the uploaders. Users could gain Baidu points by making contribution to Baidu Library and other users, such as uploading documents, categorizing documents, evaluating documents, etc. Baidu Experience is a product of Baidu primarily focusing on supporting the users with practical problems. In other words, it helps the users to solve the "how to do" problem. It was launched in October 2010. In architecture, Baidu Experience has integrated and reformatted Baidu Encyclopedia and Baike Knows. The first difference between Baidu Experience and Baidu Knows is that the former concentrates on specific "how to do" problems while the later contains a wider range of problems. The second difference is that users could share their experience without being asked on Baidu Experience. Baidu around You is a searching and sharing platform aiming at supporting the users with making their consumption decisions. There are currently 7 main categories of information on Baidu around You, including food, shopping, recreation, hotels, fitness, beauty and traveling. In addition, Baidu around You provides the users with convenient services and local information, partially coming from the users and searchable by cities. Qunar (Qunar Cayman Islands Limited), travel-booking service controlled by Baidu. As of 2013, Qunar had 31.4 million active users and raised $167 Million at its initial public offering that year. It is listed at NASDAQ. Baidu Duer: Another addition to the family of virtual assistants. Baidu Zhanzhang: The free suite of webmaster tools offered by Baidu. Baidu music, a music