It's a math issue. There's more ad space being purchased for DS products than there is for Poser products. If you click on the Gaming content tab you'll still get sponsored ads for DS content, even though most of that content is not for gaming. I just refreshed the Poser content page 3 times. One ad was for LaFemme, another was for a scenery/props set for Poser and DS. So the Poser content sponsored ads do exist, they're just far outnumbered by the DS ads.