Network classified ads are making full use of the advantages of the computer network, scientifically classifying the large amount of the practical life information according to the subjects, and providing a fast searching function for the users in the world. Now, there are thousands of network classified ads such as used car classifieds in the Internet. However, how much do you know about the characteristics of network classified ads? Generally, the major characteristics of network classified ads can be concluded from the several aspects as follows. First, it is with practical utility and is mainly directed at the practical life information for the purpose of meeting the needs of the daily life of the public. Second, network classified ads classify the advertisements based on the subjects. Therefore, the consumers may take initiative to read the information based on the actual needs. Hence, network classified ads receive the attention from the more and more consume. It is unlike the traditional advertising communication rules. Third, network classified ads make a large number of the same types of advertisements placed together and hence form the online “super industry market”. In order to make the consumers easy to select the categories, network classified ads makes the scale effect prominent. Fourth, network classified ads are cost-effective. Posting a classified ad online in a day only needs to cost few, and the advertisers can release their advertisements in the long term. Fifth, it is unnecessary for the advertisers to leave home to release the text, pictures and other rich advertising contents on the web.