At CSNbbs, all ad placements are through Google AdSense. This includes mobile too.
If you would like to directly advertise on our site, please do a "direct placement" AdWords campaign at Google. Here is a link to our inventory at Google: CSNbbs Ad Inventory. If you wish to place a mobile ad, please do a direct placement campaign in AdMob at Google (simply search for CSNbbs).
Our AdWords inventory is segregated by interest area (conference/team), however mobile ads delivered on our apps are not at this time. However, Google still allows you to target by geography and other means in AdMob.