Rawnee

Although I have never lived or worked in the US I think I can quite honestly say that "entrapment" is not the same as reporting a crime because the computer repair people in the UK do exactly the same thing. In fact, some rich and famous paedophiles have been caught this way, e.g. Garry Glitter.

As Blackhorse said, it is considered all over the civilised world your civic duty to report crime, especially such a vile crime against children.

Finally, here's a quote from wiseGeek:
UK Bob