OMG... those hackers are complete idiots!

"The hackers claim they know of about 30 unpatched Firefox flaws. They don't plan to disclose them, instead holding on to the bugs."

Mozilla's respose:

"I do hope you guys change your minds and decide to report the holes to us and take away $500 per vulnerability instead of using them for botnets."

Hacker's response:

"It is a double-edged sword, but what we're doing is really for the greater good of the Internet, we're setting up communication networks for black hats."

My response:

30 * 500 = $15,000

Those two hackers could have scored $15,000 to share amongst themselves by simply disclosing information about their findings.