I think the most jarring part of this ad is something that isn't patio11's fault: it's juxtaposed against an ad that completely stands out as an ad, which makes the 'blending' that much more 'blendy'. Without that other ad in the adjoining slot, I think the visual difference between patio11's ad and regular site content would be more stark, putting it at about the same shade of moral gray as a Google search ad.