There are some individuums purchasing zillions of expiring domains because many of them avoid the Sandbox and set up tons of porn doorways. This is going on for months. This affects trademarks, school domain, church domains, big hotels ... and so on.... Many of these individuums are Russians when you look into whois. Google is really unable to handle this situation.
Google is right now unable to handle anything. I have reported, even if I think Google should try to be able to keep their index up to date themselves without their "Spy on thy neighbor policy", just because I have seen tons of sites with scraped content from my sites registering doamin names like 4eliteDOTinfo with about 50,000 pages of spam in Google and 3elite.info with almost 60,000 pages and the list goes on and on and on. Right now Google is only a spam index wide open for anybody who wants to exploit the crappy algo. Somehow, somewhere it went really wrong and they don't know how to fix it. It seems that they reverted back to an algo use a long time ago because I see that old pages no longer used on my site shows up in their index. It's like the wayback machine showing results.....