13. A computer readable storage medium for storing a computer program providing a hot video prediction method, wherein the method comprises: providing a plurality of video comments submitted by a plurality of users during a period of time in the past; establishing a user social network of the users according to the video comments; upon receiving a new comment of a new video, determining a similar theme between the new video comment content and comment content of hot videos have been popular for the period of time according to the user social network, and predicting whether the new video is going to be popular accordingly; and verifying the prediction, and modifying the user social network accordingly.
13. A computer readable storage medium for storing a computer program providing a hot video prediction method, wherein the method comprises: providing a plurality of video comments submitted by a plurality of users during a period of time in the past; establishing a user social network of the users according to the video comments; upon receiving a new comment of a new video, determining a similar theme between the new video comment content and comment content of hot videos have been popular for the period of time according to the user social network, and predicting whether the new video is going to be popular accordingly; and verifying the prediction, and modifying the user social network accordingly. 15. The computer readable storage medium of claim 13 , wherein the step of predicting hot video comprises: searching, based on the user social network, for other users having common interests related to the users providing the new comment to establish the user social network corresponding to the new comment; determining the similarity among users corresponding to the new comment according to inseparability of the user social network corresponding to the new comment, and predicting whether the new video is going to be popular accordingly.