I like the best that I was approved a media.net account two days after I applied for it. Before media.net I applied for an adsense account numerous times and I was refused its approval. Then I read on the web that media.net is the best adsense alternative. People were saying that media.net gives bigger CPM's than adsense. After I was approved I've got my own account manager at media.net and he was very polite and helpful. Media.net allows you to place three ads on your website. Media.net is good because you get your own account manager that helps you choose your ads, and modify the ads for your website to increase the CPM. Media.net makes an optimisation and this increases the CPM, little by little. What is very good with media.net is that they count correctly the number of impressions that your site gives. No other ads company is as correct as media.net is. I had 200-300 pageviews on my wordpress statistics and media.net gave me 700-800 impressions with 3 ad units.
Media.net has also a premium publisher program. They give you the best adsense ads, together with other ads that makes site to be very beautiful and have the best possible CPM.