问题描述：
please help translate the following again into Chinese
In the quest for visitors,and the advertising revenues they bring,the big portals have rolled out inducement after inducement,from instant messaging,e-mail and web telephony to picture-sharing,games and a host of other new services
In the quest for visitors,and the advertising revenues they bring,the big portals have rolled out inducement after inducement,from instant messaging,e-mail and web telephony to picture-sharing,games and a host of other new services
问题解答：
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