vesta you are missing the point.
The thing about internet crime is that it doesn't have the same kind of boundaries as face-to-face crime (if you can call it that).
If you are doing things in this country that are illegal in other countries such as having more than one child/drinking alcohol then you are not accountable in other countries because what you are doing is not bordering into those other countries.
However, the internet doesn't have such boundaries because, if you set up a website that can be accessed by countries where the laws are different to our own, then that website also needs to abide by the laws of that country. Because you are essentially doing business in that country, albeit you are physically in the UK.
Let me give you another example:
The age of consent is different in all countries. In some countries it is eighteen, in others it is as low as fourteen, and in the UK it is sixteen.
Now let's say a man from a country where the age of consent is fourteen logs on to a chat room and starts chatting to a young girl in the UK who herself is only fourteen. He talks to her, flirts with her, and eventually the conversation turns sexual. In this country, because she is under the age of consent, that would be considered grooming and the man would face arrest, prosecution and a stint on the sex offenders register. But in the country he is from the age of consent is only fourteen. So, because he isn't actually breaking the law in his own country, do you think it is appropriate that he be having sexually explicit conversations with a girl who in the UK is under the age of consent? Should we excuse his behavior on the basis he wasn't actually doing anything wrong where he is from? or should he have to think twice before chatting up a fourteen year old girl on the internet, knowing that actually he might be breaking the law in someone else's country if she is not where he is from?
I can tell you now that if you had a sexually explicit conversation with someone who is considered a minor in their own country, you would potentially have to answer to the laws of that country, regardless of what your own country's law on the matter is.
The internet has blurred those boundaries, and people need to be aware of that when they start thinking they can do what the hell they like without consequence - it just doesn't work like that.