We need the law to be changed - petition anyone?

I recently found out about a company which is facilitating what I think would be a very good deal for many consumers : Share a small fraction of one's own broadband bandwidth, in exchange for being able to use other people's broadband when travelling. The company is here:

http://www.fon.com/en/

That service at least makes it pretty unambiguous to even the most obtuse lawyer or judge that the person paying for the broadband connection has consented to the use of the connection by other people, and I would sign up, except that in the UK as far as I know I could be held responsible when another user downloads k1ddypr0n and jolly rodger anarchist cooking thingies over my broadband. As far as I know, the only way to avoid being liable is to register oneself as an ISP, which then requires one to keep long term records of any users, (probably including a street address and other information that it would be impractical to get), (and maybe also provide a nice socket and power connection for the echelon/carnivore box if you believe the tinhatters).

The central company (fon or others) could set up as an ISP and then route all connections over VPN to their own internet connection, solving the liability problem but introducing lots of technical and economic problems that otherwise are unnecessary.

What would really help is a law that clearly states that a user is not liable for things that someone else does over their internet connection. Some people would say that this would be a blanket excuse for anyone who *does* download illegal stuff from the internet, but those people would be daily mail readers and therefore irrelevant. Clearly, the present situation does not prevent people from using someone else's connection for all their illegal needs (as explained in many posts already), and prosecuting a few grannies who didn't know why the light was always blinking will not prevent the next mp3 stealing terrorist threat or whatever.