I'll be honest, Open X has confused the crap out of me. I've been a professional web designer and developer for about 17 years, and I still can't make heads or tails out of it.
Here's my background:
The main site is 13 years old, and I began with selling my own ads, locally. 5 or 6 years ago, I added Google Adsense, which grew substantially.
April 2013, we hired a new ad management company that sells ads for us, and backs it up with Adsense. Our revenue went up a bit; it varies from month to month, but on average it's about 8-10% higher than when we just used Adsense.
The thing is, though, that I'm not 100% sure that I trust their data. Where Analytics shows 5 million pageviews, their interface only shows 3.5 million. Since we're paid RPM (per 1,000 impressions), that's a pretty big financial difference.
They get 40% of the ad revenue for management, and I'm betting that they just go through ad exchange networks. This is making me question whether I should hire a full time employee to do the same job, possibly getting the same or better results for about half the cost.
So, the question here is whether I should use Open X, Google AdX, something else, or both? Or, should I just stay where I am and be happy with the 10% increase with sketchy data?