Shopzilla ad

On occasion over the past few days I've been getting an annoying ad for Shopzilla the color of parrot vomit in the space on the left side of this page where the tasteful Google AdSense ads are supposed to be.  I presume that it's in the Google rotation, but when that ad is up, Google's identification is missing.  Just saying this so you know that I feel that the space has been hijacked from what I intended and if it keeps up I'll dump AdSense.  My apologies if it annoys you as much as it does me.  --Dennis