Mouse这里指“鼠标”，word of mouse是什么意思呢？请看对话：

    A: We have a small budget for advertising this year. Do you have any suggestions on how to spend the money wisely?

    B: There is the trend to depend on word of mouse to build your reputation in this Internet era.

    Note: “Word of mouse” is an electronic version of the time-tested idea of “word of mouth.” Numerous advertisers have jumped on the word of mouse bandwagon, using a variety of innovative techniques to get their message out to consumers. Word of mouse can be built up on review sites, which allow users to post reviews and commentary. Businesses also hire people to write positive reviews on their products and post them on forums, chatrooms, and social networking sites.