http://www.thegettogether.net have a look and please tell me what is wrong with my placement please, we have a whole mobile page too and mobile chatrooms, that are always busy but the mobile ads ctr are worse then the dang main sites!
The problem about your website is that you can only place your ads "around" the most important content of your website. So the people who visit your website will be only focussed on that and don't even see the ads on the sides or bottom. You have to place them within your content or you will always have a low CTR.