Tough times in Germany for affiliate programs who advertise on piracy sites

It hasn't made international news yet, but today the german police has raided the offices of several affiliate program owners and arrested 2 people http://www.spiegel.de/netzwelt/netzp...827344,00.html What did they do? They advertised on kino.to, a huge piracy website that was closed last year. 5 people who ran kino.to are already sentenced, some of them will do up to almost 4 years in jail. The main owner is still waiting for his trial and now they're going after their advertisers. and btw - most content on kino.to was hosted at Megaupload So when does it start to become dangerous for those who advertise on international piracy sites like pirate bay (DoubleClick Ads) etc...?