I know that the ads are served by a third party, and that VBF doesn't have direct control over it, but I thought I'd let the admins know that the attached ad at the bottom of the screen shot here caused a popup. Fortunately my Fx blocks such things (which is how I came to notice it.) I know it's the ad at the bottom, because the one that was at the top I'd seen before and knew that wasn't the source.