Google spam reports ignored?

I have reported spam in Google.de search results many times for this particular example:

google.de (German)
search string: billiger flug usa

search result url: http://www.google.com/search?hl=de&q=...

As you can see, one of the first results is www.flywest.de

If you take a look at this page, you will find nothing but one single graphic (.gif file) and only 6 words content.
But what you can't see is a whole lot of hidden text and links to doorway pages in the footer of this particular page.

Now, why are my several spam reports (I started reporting a year ago) regarding this site being ignored by Google.de?
 
sad I’m frustrated
Inappropriate?

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