Possible uninteded effects

From the Nov. 23, 2013 New Scientist.

On page 23, there is an article Google & Microsoft plan to disable 100,000 search terms that return links to child pornography. That sound like a great thing.

Then on the back of that page, on page 24, there is an article about people building tools to hide internet traffic. Sounds like that would have the effect of protecting child pornographers.