6. The method of claim 1 , wherein the ranking the plurality of help postings and simulating user interactions uses the same ranking algorithm, wherein the ranking algorithm assigns a score to each of the plurality of help postings and test posting, and wherein the score is based on a popularity value and a seed value.
6. The method of claim 1 , wherein the ranking the plurality of help postings and simulating user interactions uses the same ranking algorithm, wherein the ranking algorithm assigns a score to each of the plurality of help postings and test posting, and wherein the score is based on a popularity value and a seed value. 7. The method of claim 6 , wherein the popularity value is reduced over time using a deflation parameter value specifying a rate of reduction over time, and wherein the revised parameter values comprise the deflation parameter value.