Service providers often offer tariff structures with several two-part tariffs that consist of a fixed fee and a usage price, such that consumers may pick the tariff they prefer. Prices of tariffs have significant impacts on service providers' profit, because they simultaneously influence...

Service providers often offer tariff structures with several two-part tariffs that consist of a fixed fee and a usage price, such that consumers may pick the tariff they prefer. Prices of tariffs have significant impacts on service providers' profit, because they simultaneously influence...

Many advertisers hire agencies to run their search engine marketing campaigns; increasingly, they are using innovative performance-based compensation plans, in which they pay the agency a fee for each conversion (i.e., acquired customer) but require the agency to pay all search engine marketing...