capability to build profitable business models. Today, advertising is the main source of revenue for Web 2.0 sites; however … advertising revenues are weak and disappointing, especially related to their audience. The aim of this paper is to provide an … ad servers) in order to improve advertising revenues on Web 2.0 sites. We present two different stories about the effect …

competition in the market of the advertisers' products may decrease the accuracy of the media outlet's reports. …

contents upon which advertisers are likely to share similar preferences; ii) In advertising industries characterized by high … correlation in products' qualities, an increase in the degree of competition may translate into a lower accuracy of news reports …; iii) A sufficiently high degree of competition in the market for news drives out commercial media bias. …

too extreme as broadcasters strive to avoid ruinous subscription price competition, but strong advertising demand may lead …, magazines, newspapers, the Internet, and television (the illustrative example henceforth). Most advertising expenditures are … incurred for these media. They are also mainly supported by advertising revenue. Early work stressed possible market failures …

Yahoo’s local search advertising service support the existence of substantial positive two-way feedback between the consumer …

We study the relation between ad networks, consumer privacy and the online advertising market. We consider two …). We show that tracking may increase or decrease the provision of ads, depending on its effect on expected advertising …

We measure the effectiveness of competitive advertising on brand search using alarge-scale, quasi-experimental ad …