my weight is around 400 first day impressions climbed to 3900+ max.. and than after that five days in a row 0.0.. how come? or is this common to happen once in a while? thanks
Interesting. I have a weight of 1550 and around 900 impressions I have read in another post that it becomes more stable when you have more weight.
One explanation is that your ads were loaded onto pages very deep in a domain that are almost dead in terms of traffic. Because of the caching system and the independance of impressions, it can fluctuate and normally does so over a couple of days.