Here's Carnivore 2.2 for anyone's use: http://r-s-g.org/carnivore
Also take a look at some of the multimedia art that has been produced using Carnivore at: http://rhizome.org/
an extremely brilliant site which will keep people up on the news about current multimedia art involving the hacking of various technologies as well as other technological innovations in the artistic and communications fields.
As for the MSN article, it shows that the FBI has moved on from Carnivore. This is why Carnivore is now available for public use! This is a good thing. The government is willing to share it's most previous step in security, data-sniffing technology with the common people. It is necessary to take a look so that people can even stay ahead of the game for possible insight into their current step in global monitoring: ECHELON. The difference between carnivore and echelon is perhaps the wider coverage of formats. Echelon is rumored to have employed 120 u.s. satellites(some of which are named above) in its global watch. It can monitor WIRELESSLY any phone call, fax, e-mail, internet transmission(even WAN(wireless area networks)), and even person-to-person conversations which are more out in the open air. It is frightening but not nearly as frightening for those who exploit their access to similar technologies:
If you know the FBI is watching you, isn't it better to know what exactly they know about you and what they are monitoring the most in your life? Wouldn't you also like to know, for example if you own a website or internet business, who might be infiltrating your servers? On rhizome.org there was even an art project whereby someone used carnivore to track where exactly certain spam came from originally and send cryptic, intimidating, "i'm watching you"-e-mails which flooded the mail box and slowed down the transmitting servers of those spammers. It also then sent a message to recipients of spam on how to contact the spammer directly to convince them to stop.