iReport or who should report?

iReport is CNN's public journalism initiative that allows people from around the globe to contribute pictures and video of breaking news stories from their own towns and neighborhood. A CNN iReport poster reported on the 3rd of October, 2008 that Steve Jobs had been rushed to the ER after a severe heart attack. The original report is like this:
Steve Jobs was rushed to the ER just a few hours ago after suffering a major heart attack. I have an insider who tells me that paramedics were called after Steve claimed to be suffering from severe chest pains and shortness of breath. My source has opted to remain anonymous, but he is quite reliable. I haven't seen anything about this anywhere else yet, and as of right now, I have no further information, so I thought this would be a good place to start. If anyone else has more information, please share it.
Although CNN deleted the news and proved that this story was false, the price of Apple's stock decreased sharply.
The slogan of iReport is United, Unfiltered, News; the motivation of building such a web based media is to motivating common people to spread the breaking news happened nearby such as the explosion in the London subway.
The reputation of CNN had decided the much more significant influence of iReport than personal blogs that is also why the investors lost their faith on Apple’s stock, if the same thing happened in a personal blog, this sequence will never be like this.
Some famous tech blog such as Tech Crunch hold the viewpoint that these kind of website should learn from Wikipedia to create a better reputation evaluation system on the reporter to guarantee the quality of the news coming out every day. To achieve this, real name of the reporter should also be revealed.
However, there are always incident for the reporter to catch the chance of breaking news such as the tsuami on Indian Ocean. That kind of reputation evaluation system will eventually destroy the possibility of the motion of these citizen reporters.