Yeah well, you are not stupid or naive, that's quite a problem^^
But that's also why LimeWire already got sued, and agreed to implement blocklists..
Still, I need to agree that LimeWire itself doesn't alone bring people to share copyrighted files, and that any kind of information technology, be it CD-R, USB-Sticks, Computer Networks or Servers for Hosting files are very often used that way. Give a user a high capacity HDD, what does he want to store? LimeWire is different from stores like AllofMp3.com that exclusively and directly sell copyrighted products illegally. LimeWire gives you the ability.. it's up to you how to use it.
I would still think there's another problem: LimeWire is optimized for sharing music tracks, I would say. Which music track is not copyrighted, but still well-known? This is where LimeWire get's it power from, and almost everytime it is copyrighted music having these fitting attributes..
Did LimeWire sue them, or did the RIAA sue them due to the use of LimeWire?
If it was the RIAA, this seems to be a strategy by the music industry to make people listen: report about cases in their region, with a personal story. Read about it: RIAA Shifts Lawsuit Strategy
Nah, I don't think LimeWire itself spies on its users. It's so easy to logon the LimeWire network. Just be a bastard, logon, participate in file-sharing, and log every person you had contact with. Now you try to sue all those people.
So it is not as dangerous for occosionally downloaders as the easy LimeWire is. Perhaps this makes it less interesting to sue
And yeah I agree with Woodenhead's post.