7. The method of claim 2 , further comprising: determining a number of users exposed to the social networking activity; and calculating an effectiveness score for the social networking activity based on the activity score and the number of users exposed to the social networking activity.
7. The method of claim 2 , further comprising: determining a number of users exposed to the social networking activity; and calculating an effectiveness score for the social networking activity based on the activity score and the number of users exposed to the social networking activity. 9. The method of claim 7 , wherein calculating the effectiveness score comprises calculating the effectiveness score at least in part based on a ratio of the activity score to the number of users exposed to the to the social networking activity.