ok so... this
[Only admins are allowed to see this link]i spot it in the adverts
now i would like to point out that this would be somewhat important as advertisers would expect their links to be visible to all.
Signifigance... well it would result in the sites advert (on other sites naturally) being removed as it cannot be displayed clearly here.
Simple... yes
Big impact on advertising... yes
Royal pain in the ass... naturally
But yea it may be that way for some random reason but those advertising, linking back and all that jazz wont realy care and simply remove the advert for here to compinsate