Ok, so the FBI launched DNSChanger.. which means you have to enter in a box your own IP address, which is strange due to PHP script allowing you to gain the IP address or just grabbing it straight from the visit to the server.
So you have a form (jquery) where you put in your IP address, this in the T&Cs where it says that it allows the FBI (this is a basic overview) to make changes or edit both your router and computer settings.
Now i understand this for getting rid of the malware but i see no point in putting in your IP and then consenting to other changes that aren't specified to removing things.
aka.. a Java run-by or some form of tracking.
Yet another way for the FBI to monitor you.
If it's read DO NOT USE THEIR STUFF, get malwarebytes or a free trusted virus removal software.