There's a lot more in that law then going after porn pirates in fact that's the least of its intended purpose. Pharmacy sites, Music Downloads, WikiLeaks, Fake designer clothes, handbags, colones, etc. The scary part is those industries have a lot of lobbyists that I'm sure are pushing for passage.
Personally, I don't know that we really need to grow the government anymore then it's already bloated out of proportion self, so not really a fan of adding more employees all over the world to enforce this law.
I think there's parts that work but as overall piece of legislation its overkill and it will have unintended consequences.
Here's the entire bill for those that want to read it:
http://judiciary.house.gov/hearings/...0HR%203261.pdf