1. A method comprising: receiving a posting to a forum, the posting requesting a response; extracting a keyword from the posting; retrieving a responder identifier by executing a first query with the extracted keyword as a retrieval argument of the first query, the responder identifier corresponding to a person available to provide the response; obtaining a count of keywords by executing a second query with the responder identifier as a retrieval argument of the second query, the count of keywords quantifying a number of times the keyword is included in responses provided by the person available to provide the response; identifying the person as a responder to respond to the posting based on the count of keywords; and assigning the posting to the identified person to provide the response.
3. The method of claim 1 , wherein the identifying of the person as the responder is based on the count of keywords being highest among a plurality of counts of keywords corresponding to a plurality of responder identifiers corresponding to a plurality of persons.