I do wonder how long it will take before google, and Matt Cutts dare to address the huge problem they have caused themselves by giving spammers the tools to monetize spam.
It all comes down to them not checking the websites that carry their ads but because of the tons of money this generates for google it does look like they are not really checking that on purpose.
With all the loudmouthing they do on how good their algorthems are it seems a little "strange" that they can't figure out when their ads are placed on spam sites.
Yeah, not to mention that companies must be extremely naive, or bought out, to employ "former" NSA agents, specially when they handle huge amounts of personal data from people all over the world.
Your IP address is temporarily blocked because you or someone else from your IP or someone else using the same proxy as you have recently used this service.
I guess it's because NTL, my ISP here in the UK, uses a proxi, I've never used that service myself.