Hi, I've been fighting for a long time against spammers in AdSense and they just come back with new domains, AdWords accounts and ads.
So share your best tips to pick them up at the Ad review center.
One easy way to find this Mindspark spammer that tries to get people to download a browser extension is to search for "index.jhtml" in Ad review center. This brings up all these download -advertisements.
And in General categories you can review ads with more precise categorization when you know from which categories spam normally comes from.
I always pick up the root domain and block it. Also block the AdWords account and then I do "Find related ads"-search. But that's all you can do and sooner or later you find the same stuff with new domains. I wish Google could give us better tools to fight against this spam.