Go to DiscussVista.com and tell me what do you see. I was redirected to Google search results for "discussvista". Then when I try more times, I get an error: "Directory Listing Denied This Virtual Directory does not allow contents to be listed." Does this domain belong to Google? Or, is the owner of this domain using a kind of Google parking service? If this is how Google parking page looks like, I think you can earn pretty well on it (of course if you have good traffic), as in my opinion many people will click the search results. I also wonder why I cannot view the site more times? Does your IP get blocked after your first visit so that you don't click the ads like insane, so that the owner doesn't get banned from AdSense...?
Now it's displaying a 403 error page, probably after removing such redirection as result of breaking Adsense TOS and being banned
i think the result is due to your script. check your script or upload an empty or text file index.html or index.php to see if there's anything there.