Systems and methods disclosed herein score leads by determining and applying a scoring rule based on lead participation in an activity. This involves a processor of a computing device receiving information on participation in the activity by prior leads that resulted in conversions or rejections. A scoring rule is determined for the activity by assigning a score to the activity based on the information on participation in the activity by the prior leads that resulted in the conversions or the rejections. A new lead is scored using the scoring rule by assigning the new lead the score based on participation by the new lead in the activity. The scoring of the new lead can be used in various ways. In one example, the score of the new lead is used to determine to send a communication to the new lead.