7. The method of claim 6 , wherein adjusting a weight includes increasing or decreasing a previous value of the weight proportionally with respect to a control ratio of the accept ratio for the corresponding topic source to the average accept ratio.
6. The method of claim 3 , wherein the reference value is determined or retrieved by: determining or retrieving an average accept ratio, the average accept ratio being a ratio of a number of selected topic suggestions from the combined list to a number of total topic suggestions in the combined list; determining or retrieving an accept ratio for each topic source, the accept ratio being a ratio of a number of selected topic suggestions from the topic source to a number of topic suggestions from the topic source; and adjusting one or more of the weights stored on the storage medium according to a comparison of the accept ratio for a corresponding topic source with the average accept ratio.