'Internet blackout' set for 9 July.... cutting off Web for users in U.S. and UK

[#1]

'Internet blackout' set for 9 July: FBI to 'pull plug' on 350,000 virus-infected machines - cutting off Web for users in U.S. and UK
Read more: http://www.dailymail.co.uk/sciencetech/article-2134853/Internet-blackout-set-9-July-FBI-pull-plug-35...

[#2]

I just did and I wonder - not too hard - about this from the same link

Quote

The group, called the DNSChanger Working Group, will examine possibilities to fixing the problem. If no solution is reached, millions of people could be without the Internet, RT reports.

This link apparently checks it http://dns-ok.us/
Also this isn't a suitable item for the Internet Event Calendar so moved to the Broadband Board
I was going to move it to the Windows Forum but then found that Mac's get it as well http://mashable.com/2012/04/24/dns-changer-trojan/

[#3]

[#4]

How do we know that tat checker is not dangerous even?