I have seen it numerous time. The worse that they are losing, the harder that they attack and flame.
What they do not get is they are so obvious that it pushes customers to me. I get calls from people that have visited CureZone that tell me "If they are trying that hard to destroy you then the products must be great."
People are much smarter than to be dissuaded by that garbage.
Some of the best promotions that I have ever had was put online by FDA employees and Pharma trolls. Things like the AIDS Fraud Task Force Wall of Shame. Sadly, they finally took it down.
Even Quackwatch.org has been helpful and they never even mentioned ParaZapper.