1. A method for guiding user moderation at a topic page by confidence levels, comprising: presenting a topic page in response to a query, the topic page including a plurality of modules with content that match the query, the topic page associated with a confidence level and one or more page attributes that define characteristics of the topic page and the plurality of modules contained therein; receiving modifications to the topic page, wherein the modifications include one or more page attributes associated with the modifications and one or more user attributes, the user attributes used to derive a confidence level of a user making the modifications, wherein the confidence level of the user defines an engagement metric that measures topic page usage; evaluating the modifications to the topic page based on the confidence levels associated with the topic page and the user, one or more page attributes and user attributes, the evaluation includes, obtaining the confidence level of the topic page before the modifications; computing a new confidence level for the topic page based on the modifications using page attributes associated with the topic page having the modifications and the user attributes of the user making the modifications; comparing the confidence level of the topic page without the modifications against a threshold value and against the new confidence level of the topic page with the modifications; and implementing the modifications to the topic page when the confidence level of the topic page with modifications exceeds the confidence level of the topic page without the modifications.