Doesn't load for me in firefox until I change the URL to:
It's returning a 1px by 1px gif for some reason, no page data!
See if you can go here:
If you can't, and it's the same problem, you may have Adblock on or a really aggressive filter that strips any content path related to advertising to a whitewashed 1 pixel image of nothingness.
Since the URL contains the word "advertise" you're looking at that as a likely suspect for the nail.