13. The computer system of claim 9 , wherein the software instructions further cause the computer system to: receive a new post to the discussion thread; extract a new keyword from the new post; and assign a new keyword score to the new keyword.
13. The computer system of claim 9 , wherein the software instructions further cause the computer system to: receive a new post to the discussion thread; extract a new keyword from the new post; and assign a new keyword score to the new keyword. 14. The computer system of claim 13 , wherein the new keyword score assigned to the new keyword is a normalized score based on a number of the plurality of keywords with the new keyword and the total score of the discussion thread.