I have 2 questions. 1) I have 13 hubs right now and getting 20-30 views per day. When I check my hub statistics, they show 20 ( 1 day ) and then if I check after 2 hours, this number decreases. How is this traffic calculated? 2) My hub statistics show 30 views per day. However hub ad programs shows only 1-2 impressions per day. Can some one explain this?