The efficiency of marketing campaigns is a preconditionfor business success. This paper discusses a technique …

The Internet has evolved from Web 1.0, with static web pages and limited interactivity, to Web 2.0, with dynamic … Internet content has generally remained the same: zero. Because no transaction records the "purchase" of this content, its … value is not reflected in measured growth and productivity. To capture the contribution of the "free" Internet, we model the …