RE: child exploitation: Good example. We all agree that child exploitation is BAD, right?
We might disagree about what (if anything) we should DO about it, but isn't it worth discussing whether or not there is something we MIGHT do about it? For example, maybe offering mostly-anonymous bounties to reward anybody who gives information that leads to the arrest and conviction of people abusing children for profit or pleasure is a good idea. Maybe those bounties could be paid in Bitcoin.
I'll make a prediction:
The efforts of the Digital Economy Task Force will save exactly zero children from being exploited.
The spectre of child exploitation will be brandished like a club in order to silence the critics of whatever the task force is really about, just like every other time the "for the children" meme is trotted out.