We analyze a large-scale randomized field experiment in which a search engine varied the prominence of search ads for 3.3 million US users: one group of users saw the status quo, while the other saw a lower level of advertising (with prominence of search ads decreased). Revealed preference data...

The advertising sector in Albania has grown to millions and millions of Euros spent by advertisers yearly, but how efficiently are these huge budgets being spent remains still unknown to many experts in the field, and most important of all, to advertisers themselves as well. The thesis aimed to...