10. A method implemented by at least one computing device, the method comprising: accessing a message log associated with users; based on the message log, computing: knowledge scores that indicate an extent to which the users are regarded as authorities on a topic, and power scores that indicate an extent to which some users receive messages of the message log from other users; receiving a selection of an individual user; and responsive to the receiving, causing a graphical user interface (GUI) to be displayed, the GUI including a chart depicting the respective knowledge scores and the respective power scores for the individual user on the topic.
10. A method implemented by at least one computing device, the method comprising: accessing a message log associated with users; based on the message log, computing: knowledge scores that indicate an extent to which the users are regarded as authorities on a topic, and power scores that indicate an extent to which some users receive messages of the message log from other users; receiving a selection of an individual user; and responsive to the receiving, causing a graphical user interface (GUI) to be displayed, the GUI including a chart depicting the respective knowledge scores and the respective power scores for the individual user on the topic. 17. The method of claim 10 , wherein the at least one computing device implements the method by executing computer-executable instructions stored on a memory storage device.