TJ Here.
We have been working with (or ignored by) the folks at Ning about the pop-ups that occur here occasionally. There is no explanation why only this site is getting them. Bens Friends has cancelled all Google Advertising leaving donations and Amazon Smile as our only income to keep the lights on so it isn't us. Our Tech Person Rose who does an amazing job has come up with these work arounds. They will help but aren't perfect: