Hacker News Reader

Law enforcement: Woohoo we just spent millions in tax-payer dollars and got these copyright infringing bastards' domain. That'll stop them.

30 minutes and $10 domain registration later: Pirate bay: We've migrated to our new domain, take this one and we'll buy another...

I'd imagine they bought as many as possible several years ago, and only release 3-4 at a time.

At this point, I doubt there are very many TLD's left that don't have a TPB domain, whether bought by TPB or by a reseller.