It is not possible to directly control which ads are displayed because those ads are placed in a rotation with several others through the ad serving companies. These websites (DSiPaint, 3DSPaint, TWiiter, WiiOperaSDK, HB Online) are set up under the categories of Teen and Social Networking, but unscrupulous companies sometimes push their smut. If you do not like what they advertise, then do not support them. The companies will realize that they are marketing to uninterested parties and eventually give up. Conversely, if you like what you see in the ads, please do support them because the revenue covers the investments of time and money put into these websites.