Sites that involve the user and have a sense of fun or adventure will get more hits, and can charge more for ad space.
让用户参与，并且在趣味或者冒险方面做得不错的站点会得到更多的点击，而且可以为广告空间收取更多费用。
2
IMS allows operators to charge multimedia session appropriately: If a user USES videoconference over the 3g cellular network, there is usually a large data transfer that consists of audio and video.
A preload notice could be used to warn the user, based on a set of rules defined for the preload notice, that this will cause an extra charge on their bill.