Those who think they have nothing to worry about should consider that the notifications about copyright violations cannot be verified by the ISPs in practice. They will simply have to trust the IFPI, or the RIAA, if they want to comply with their orders (which may be necessary to comply with the DMCA). How much does it take to get a user kicked? How much will it take in the future? And how easy will it be to get back in?
Under the DMCA infringing material will have to be removed, infringing users remain entitled to their day in court. If you remove the offending files from your upload directory (easily verifiable by the same Media Tracker software which originally nailed you, presumably), there is no longer any provision in the DMCA that would compel an ISP to punt your net access. The RIAA may as well "order" your ISP to knit a fur coat out of 101 dalmations.
Once the files have been removed, the artist, label, RIAA, IFPI, take your pick, can pursue you in court for copyright infringement. If you lose, net access is the least of your worries. If you win - say because you didnt infringe on a copyright - feel free to countersue all the way into retirement.
In other words, those who think they have nothing to worry about actually do have nothing to worry about. Considering how difficult it would be to prove infringement on the basis of logs produced by software running over a network (tcp) that has no facilities for authentication (ip4), you'd have to be a major league pirate before anyone hauled your ass into court.
In fact, 90% of lawyering is bluffing the opponent into doing the right thing. Ie, the real strength of this software is that it will put the fear of mom into the average 16 year old file trader.
Upon review of your article, I can only conclude from its unfounded, alarmist, shrill tone that it is a troll.
Lionel Futz, sheister, shoemaker.
(I also have an opinion on Media Tracker, if you are interested.)