incrediBILL - 8:12 am on Oct 30, 2011 (gmt 0)
So the fact that more traffic = lower ecpm has nothing to do with advertisers budgets running out and everything to do with a scrub algo.
ARG - it's all tied together, it's a combination of traffic, traffic sources, budgets and algos assessing all the parameters and assigning value your clicks.
However, without analyzing your traffic, simply saying you have MORE traffic is a meaningless unit of measure. You need specifics about that traffic before it's impact on eCOM can be truly determined, but trust me that ad budgets are the biggest factor in AdSense because it's a BIDDING SYSTEM.