I did report two very egregious spammers in a sector I watch using the jagger update and addressing the first line to GG with my id in it. He had asked me to do it that way since I was complaining in the update thread that the reporting system did not work so why waste your time. He did take action against one spammer with several sites using the most outrageous blackhat methods.
But the other site I reported that has sat in the top of the serps in my sector for years is still there. Hasn't been touched. They link to authority sites and competitors sites using a trans gif and hidden text and scraped content from a canadian gov't site.
Thought GG just lost that one in the shuffle so I resent it yesterday. We'll see in a few days but it seems this site is bulletproof. Several years old, in the dmoz and a few hundred backlinks. (mostly bs links)