Hi! I am trying to understand what method CJ uses to rank different advertisers: is it commission*conversion rate? The higher the product of the two metrics, the more impressions. How do they evaluate relevance of different advertisers on the same publisher? Also I know CJ uses a network rank for an advertiser - anyone knows what that is? Also, how to they charge per click - do they use the 2nd price auction (like in the CPC world) - you pay the commission of the advertiser below you in rank. Thanks!