Norton Blocks based on Image File Name

Maybe I'm about 3 years behind on this little fact, but I thought I'd share it anyway. While playing with a cool tool at SilkTide I found that our site had a score warning due to 'Use of advertising keywords' in image names, detailed as follows :

We found that one or more of your pages contains an image named with a advertising word (e.g. "banner" or "advert"). These files are likely to be automatically blocked by popular advert blocking software, such as Norton AntiSpam.

I always thought banners were blocked on banner size... live and learn... :)