Thanks. For the year we had a total of $2,243 in billable ad revenue but since we didn't collect any of it except for Google AdSense, it's not being counted. Every ad company that we use has 60 day terms.
As far as traffic 2011 total traffic was 670,587 unique and 1,013,611 page views. For the longest time we had only 3 ads per page then upped that to 4.
That total revenue is not for just ad impressions but paid placement. On average our CPM for ads is only $0.50.
We could be making more with pop-ups/unders and full page ads but we don't want to be that type of site.
We know nothing about the online advertising game except it feels like we should be making more. Right now we are working with a pretty large ad network to hopefully bring us more ad revenue for 2012. Our goal is to be able to work for the site full time which means at least $15,000/month in ad revenue is needed.