Are you addicted to internet? What is your first thing at home? Internet? I will answer , "Internet". I browsered around 100 pages per day. The friends around myself online a lot. Online game, chatting and surf on net. I rememeber a friend told me his home cut off from internet for a week. After 3 years ago, he started to use internet. He even has not online for a week.
I think that is the reason Microsoft planned to launch her advertisememt program and Yahoo's publisher program is Beta stage.