Being new to the co-op I am still trying to get a handle on impressions... Took a while to start getting some, then I got a steady very low number.. Then I added a few more ads.. My weight increased slightly.. but then I saw one of my new sites get like 10 times the impressions before... and then my first ad saw like a 100 fold increase in impressions. I am speculating some of it has to do with just getting in the system for long enough time that you get cached into the proper number of sites etc. I know the level of traffics on various sites will also impact impressions... Just wondering if there is something else I am missing.