A case I've been following since it broke in the Sheffield Star is that of Richard O'Dwyer, who faces extradition to the US on charges of criminal copyright infringement for a links website he hosted in the UK.
Several aspects of this case are deeply worrying. Merely linking to infringing content has not so far been shown to constitute infringement here in the UK.
But the most worrying aspect is also the main difference between the O'Dwyer case and that of another British citizen facing extradition, Gary McKinnon.
The McKinnon case raises its own set of issues, but there is at least a clear victim - the US Department of Defence - linking the case to US territory.
But the O'Dwyer case does not have a US "victim". Before you cry "but the American film studios and US recording artists" you must consider that copyright protection is granted by the jurisdiction in which the potential infringer resides.
Richard O'Dwyer is alleged to have committed copyright infringement whilst resident in the UK. He was therefore at the time subject to UK copyright laws, and any UK offence can only be determined by UK courts.
But I hear that's not the angle US authorities are claiming. I spoke to a contact over summer who claimed the US authorities were pushing for jurisdiction because at least one of the sites O'Dwyer is alleged to have run was hosted under a .com, .net or (possibly) .org suffix.
Why? Because these domains are overseen by US bodies, and US authorities are now claiming anyone who hosts a website under a top level domain (TLD) managed within US jurisdiction submits themselves to US law. Peter Walker of the Guardian verified my source when he spoke to Erik Barnett, assistant deputy director of the US Immigration and Customs Enforcement Agency.
So where does that leave UK-based website owners running service potentially illegal in the US, e.g. gambling etc? Who knows. I wrote more about it in Sovereignty Creep and Elastic Jurisdiction.
Note .org, whilst manager by the Afilias registry headquartered in Ireland, is overseen by US-based Public Interest Registry. .com and .net are managed by US company Verisign.